亚洲免费av电影一区二区三区,日韩爱爱视频,51精品视频一区二区三区,91视频爱爱,日韩欧美在线播放视频,中文字幕少妇AV,亚洲电影中文字幕,久久久久亚洲av成人网址,久久综合视频网站,国产在线不卡免费播放

        ?

        Developing Expert Scenarios Facing Iran’s Petroleum Industry

        2012-04-29 00:00:00MohammadAminGhalambor;MohammadMehdiLatifi,*;NimaSepehrSadeghian;ZeinabTalebipourAghabagher

        [a]MBA, Faculty of Management and Accounting, Shahid Beheshti University, Evin, Tehran, Iran.

        [b]DBA, Faculty of Management, University of Tehran, Iran.

        [c]MBA, Faculty of Management and Social Sciences, Islamic Azad University-North Tehran Branch, Hakimieh, Tehran, Iran.

        *Corresponding author.

        Email: mehdi.latifi@yahoo.com

        Received 20 June 2012; accepted 27 August 2012

        Abstract

        This research discusses future development of Iran’s petroleum industry by using strategic management approaches relying on scenario-based planning models. The theoretical frame of this research is a normative paradigm in upper range documents advocate approach. Delphi methods, cross-impact analysis, and scenario-based planning have offered flexible and comprehensive planning combinations in proposing new styles in foresighting products development. In addition, Micmac software was employed to analyze dates. In this research, 235 influencing factors on a product development trend were selected using a PESTEL model and a Delphi approach, then the effects of these factors on each other were tested that eventually 22 key factors were selected. Among 22 key factors, 2 main factors including “political relations” and “the government’s dependence on petroleum” were selected using a cross-impact analysis. After that, a 2×2 matrix was formed that contains four scenarios including a playful rabbit, a runaway snake, a noble horse, and a sleeping lion. This research can enhance decision making abilities of top managers through identifying key signals of how each scenario appear in future of Iran’s petroleum industry. Results show that management team of petroleum products requires serious etiology and attitude rehabilitation.

        Key words: Futurology; Scenario planning; Iran’s petroleum products; Key factors; PESTEL model; Micmac software

        Ghalambor, M.A., Latifi, M.M., Sadeghian, N.S., Aghabagher, Z.T. (2012). Developing Expert Scenarios Facing Iran’s Petroleum Industry. Advances in Petroleum Exploration and Development, 4(1), -0. Available from: URL: http://www.cscanada.net/index.php/aped/article/view/j.aped.1925543820120401.612

        DOI: http://dx.doi.org/10.3968/j.aped.1925543820120401.612

        INTRODUCTION

        Energy is one of the major inputs for the economic development of any country. In case of developing countries, the energy sector assumes a critical importance in view of the ever-increasing energy needs requiring huge investments to meet them. Investment banking firms are intermediaries that can fund energy sectors. They advise firms, distribute securities, and take principal positions in a market[1].

        Energy can be classified into several categories based on the following criteria:

        ? Primary and secondary energies

        ? Commercial and non-commercial energies

        ? Renewable and non-renewable energies

        (1) Primary and Secondary Energy Sources

        Primary energy sources are those that are either found or stored in nature. Common primary energy sources are coal, oil, natural gas, and biomass (such as wood). Other primary energy sources include nuclear energy from radioactive substances, thermal energy stored in earth’s interior, and potential energy due to earth’s gravity. The major primary and secondary energy sources are shown in Figure 1.

        Primary energy sources are mostly converted into secondary energy sources in industrial utilities; for example coal, oil, or gas are converted into steam and electricity.

        Primary energy can also be used directly. Some energy sources have non-energy uses, for example coal or natural gas can be used as a feedstock in fertilizer plants.

        (2) Commercial Energy and Non-Commercial Energy

        (a) Commercial Energy

        The energy sources that are available in the market for a definite price are known as a commercial energy. By far the most important forms of a commercial energy are electricity, coal, and refined petroleum products.

        (b) Non-Commercial Energy

        The energy sources that are not available in the commercial market for a price are classified as a non-commercial energy. Non-commercial energy sources include fuels such as firewood, cattle dung, and agricultural wastes which are traditionally gathered and not bought at a price used especially in rural households. These are also called traditional fuels. A Non-commercial energy is often ignored in energy accounting.

        Figure 1

        Major Primary and Secondary Sources

        (3) Renewable and Non-Renewable Energy

        Renewable energy is the energy obtained from sources that are essentially inexhaustible. Examples of renewable resources include wind power, solar power, geothermal energy, tidal power, and hydroelectric power (See Figure 2). The most important feature of renewable energy is that it can be harnessed without the release of harmful pollutants. Non-renewable energy is the conventional fossil fuels such as coal, oil, and gas, which are likely to deplete with time.

        Figure 2

        Renewable and Non-Renewable Energies

        While several electronic systems including internet have changed the communication world and given particular opportunities to communication ways[10], oil products can be arranged in different categories according to their usage. Therefore, the research results can be used for Iranian petroleum top decision maker in order to lead future production of petroleum products.

        One of the most reliable predictions[16] about oil and gas resources shows through the year 2030, that traditional fossil fuels will continue to supply the vast majority of energy needs. At the projected growth rates, both oil and gas will represent about 60% of total energy usage, which is near the share they act today. Nuclear, hydro power, wind, biomass, and other renewable fuels will grow in total at 1.6% annually. The following graphic in the ExxonMobil Outlook depicts its view of the demand for energy globally. (Figure 3 The Outlook’s graphics are in color; the parenthetical caption appearing below the graphic as explanation has been rewritten for readers viewing this graphic in black and white copy.)

        Figure 3

        Oil and Gas Resources Until 2030

        1. WHAT IS SCENARIO PLANNING: THE REASON TO USE THIS APPROACH

        Scenario planning was formed in U.S. Army during the Second World War in order to deal with probable attacks of enemies. After the second World War, Pier Walk and Herman Cain used Scenario planning in Royal Dutch Company in order to influence the decision makers of the company which resulted in remarkable achievements[14]. Strategic planning is a suitable tool to reach organizational goals[15].

        There are many different approaches to scenario planning, but most of those presented here are derived from the qualitative approach of Shell/SRI International and share many features[4, 5, 19, 20, 21, 23, 24, 25, 26].

        These approaches differ in emphasis due to their variation in goals of the ones who have created them. The research approach to scenario planning is similar to these approaches while it is influenced by adaptive environmental assessment and management[11]. The fast-changing nature of the modern business environment means that planning should be a continuous[12]. In this complex and turbulent environment, relying solely on strategic planning cannot guarantee the success of businesses; rather businesses have to prepare themselves to react to a wide range of probable futures[9]. Scenario planning is considered as a mixture of six interacting stages. Scientists, managers, policymakers, and other stakeholders explore through series of workshops. It begins with identification of a focal issue or problem. This problem is then used as a focusing device in order to assess the system. The assessment is combined with the focal problem to identify key alternatives. Alternatives are then developed into actual scenarios which are tested in a variety of ways before being used in a screened policy. Although this overview presents scenario planning as a linear process, it is often more iterative: system assessment leads to redefinition of the central question, and testing can reveal blind spots that require more assessment[8].

        Scenario Planning is a technique that allows for an effective assessment of uncertainty. Figure 4 illustrates the relative position of forecasting (F), and scenarios in terms of value compared to distance into the future[24]. On a short-term period, the environment is highly predictable and forecasting is expected to render high yields. In a very long-term period, uncertainty is so high that strategic planning will render smaller returns. In between, scenario planning provides value; allowing both certain uncertainty and still building upon predetermined knowledge. Next, a description is given of how scenario planning aids companies towards this “break-even-point”.

        Figure 4

        Forecasting versus Scenario Planning Source: World Economic Forum

        1.1 Scenario Planning-Certain Uncertainty

        Over the last decades, a scenario planning method has gained popularity. As a business environment is becoming increasingly volatile, the “complexity view” emerged. The “complexity view” suggests that it is fundamentally impossible to predict aspects of the future[24]. Table 1 compares forecasting with scenario planning[7]. The major difference between these two approaches lies in the acceptance of uncertainty and the acting hereupon from a pluralistic ethic.

        Table 1

        Forecasting Versus Scenario Planning

        ForecastingScenario planning

        Focuses on certainties and disguises uncertaintiesFocuses on and legitimizes recognition of uncertainties

        Conceals riskClarifies risk

        Results in single point projectionsResults in adaptive understanding

        More quantitative than qualitativeMore qualitative than quantitative

        Schoemaker[20] explains the difference between “traditional” techniques of exploring the future and scenario planning by climbing a mountain: “Suppose you are climbing a mountain. Previous planning would provide you a detailed map describing the constant elements of the terrain. Of course, this traditional planning tool is very valuable and, indeed, indispensable in this case. However, it is incomplete. First, it is a distorted representation (i.e. any two-dimensional map distorts the earth’s surface). Second, it ignores the variable elements, such as water, landslides, animals and other hikers.” The comparison of Schoemaker points out the value of adding a view that includes important variables to the discussion instead of ignoring them. When climbing mountains, after all, you would at least want to determine what to do when a storm strikes you, or when it starts to rain heavily. As Schwartz[22] states: “To act with confidence, one must be willing to look ahead and consider uncertainties: What challenges could the world present me with?” In relation to Figure 4, the detailed map provides the “predetermined”, whilst the assessment of what to do in case of rain enables an assessment of relevant “uncertainties”. Scenario planning offers companies the possibility to take charge and proactively deal with different plausible futures. As Ogilvy[25] states: “We need to go towards a way of viewing the world from multiple perspectives….” Since the environment changes, your business should evolve as well.

        Without this effort, “there is a lack of understanding of how the wider environment is impacting customers, their needs, and value systems. One cannot stick to one business method of excellence and expect it to be “a winner” in all periods. “Winning means changing the way one plays over time”. As important variables in the environment change, strategic plans should as well. For this reason, scenario planning is a continuous process – inducing constant adaptation and learning. Only when we keep learning, we keep looking ahead instead of looking backwards. Learning takes an important place in the scenario planning technique. Van der Heijden[24] considers: “In a world of constant and ever-increasing change, is it sufficient to learn reactively, or is it necessary to learn proactively?” The answer is: the latter. We must find a means to learn “proactively”. “Learning is a process of adaptation to one’s environment, a process of trial and error, a process of perpetual innovation (metaphorical mutation) followed by a selection of what is most fitting to a particular environmental niche, a process of testing the affordances of different niches and differentially reproducing those innovations which the niche can best afford”[25]. The traditional learning method is one of “single-loop learning”. Here, a strategy is predetermined and executed, without adaptations made along the way. “With double loop learning, operating procedures are changed in responsive to emerging situations”[24]. As a result, a company and its employees can effectively adapt to changes in the environment. In Figure 5, double-loop learning is graphically depicted. Double-loop learning enables an effective assessment of uncertainty instead of ignoring it. The underlying assumptions that lead to the strategy formulation are assessed with due regard to external (potential) developments, strategies are kept relevant and up-to-date. In the execution of double-loop-learning, “The key is for organizations to evaluate managers based on good decision processes rather than good outcomes”[24]. This way, assessing past strategies in new situations is stimulated.

        Figure 5

        Single-Loop and Double-Loop Learning, Argyris C, Sch?n D.[3]

        Van der Heijden[24] distinguishes the following specific benefits of scenario planning: “Enhanced perception, integration of corporate planning, making people think, structure for dealing with uncertainty, a communications tool, and finally a management tool. Although these concepts mostly speak for themselves, it is useful to develop a more thorough understanding of their meaning in business.” First, “Scenarios are … the most powerful vehicles I know for challenging our “mental models” about the world, and lifting the “blinders” that limit our creativity and resourcefulness.”[22]. Accordingly, our perception of the external environment and the potential of acting hereupon are enhanced. The knowledge gained, can then be used in a better integration of corporate planning. Evidently, scenario planning also serves as a means to making people think. When stimulated properly in a team environment, people will be likely to actively engage in (strategic) discussion with each other. It is important to: “Make explicit our own tacit understandings and our own cultural insensitivities at the most basic level”[24]. Last, scenario planning is both a good communication tool; for instance to warn people about potential changes, and a good management tool; as a basis for strategic decision making. Here, “a scenario is a tool for ordering one’s perceptions about alternative future environments in which one’s decision may be played out”[22].

        2. OUTCOMES OF SCENARIO PLANNING

        Many of the definitions here do not explicitly state the outcome variables of scenario planning; they rather indicate that some authors are unsure about the aims of their definitions. This also suggests that scenario planning professionals are just beginning to consider the importance of defining what they do and explicitly stating what they intend to achieve by doing it. Table 2 shows that almost half of the available definitions date from 1997 to the present. Such a surge of publication activity related to scenario planning suggests a recent increased use of this strategic tool. The first available definition of scenario planning is offered in 1985, yet the process has been applied in practice since the 1960s. The increase in a recent scholarly literature around scenario planning suggests that the process is developing and maturing with the help of professionals. These professionals state that scenario planning does not suffer the same inadequacies and criticisms which have been leveled against general strategic planning processes.

        Table 2

        Scenario Planning Definitions and Outcome Variables

        AuthorDateDefinitionDependent variables

        Porter1985“An internally consistent view of what the future might turn out to be not a forecast, but one possible future outcome” (pp.63)A view of one possible future outcome

        Schwartz1991“A tool for ordering one’s perceptions about alternative future environments in which one’s decisions might be played out” (pp.45)Ordered perceptions about alternative future decision making environments

        Simpson1992“The process of constructing alternate futures of a business’ external environment” (pp.10)Constructed alternate futures

        Bloom and Menefee1994“A description of a possible or probable future” (pp.223)A described possible or probable future

        Collyns1994“An imaginative leap into the future” (pp.275)An imagined future

        Thomas1994“Scenario planning is inherently a learning process that challenges the comfortable conventional wisdoms of the organization by focusing attention on how the future may be different from the present” (pp.6)Challenged comfortable conventional wisdoms about the future

        Schoemak er1995“A disciplined methodology for imagining possible futures in which organizational decisions may be played out” (pp.25)Imagined possible decision-making futures

        Van der Heijden1997(1) External scenarios are “internally consistent and challenging descriptions of possible futures”; (2) an internal scenario is “a causal line of argument, linking an action option with a goal,” or “one path through a person’s cognitive map” (pp.5)Descriptions of possible futures; explicit cognitive

        Maps

        De Geus1997“Tools for foresight-discussions and documents whose purpose is not a prediction or a plan, but a change in the mind-set of the people who use them” (pp.46)Changed mind-sets

        Ringland1998“That part of strategic planning which relates to the tools and technologies for managing the uncertainties of the future” (pp.83)Managed future uncertainties

        Bawden1998“Scenario planning is one of a number of foresighting techniques used in the strategic development of organizations, which exploit the remarkable capacity of humans to both imagine and to learn from what is imagined”Human imagination and learning made explicit

        Fahey and

        Randall1998“Scenarios are descriptive narratives of plausible alternative projections of a specific part of the future” (pp.6)Plausible alternative projections of a specific part of the future

        Alexander

        and Serfass1998“Scenario planning is an effective futuring tool that enables planners to examine what is likely and what is unlikely to happen, knowing well that unlikely elements in an organization are those that can determine its relative success” (pp.35)Examined future likelihoods and unlikelihood

        Tucker1999“Creating stories of equally plausible futures and planning as though any one could move forward” (pp.70)Stories of equally plausible futures that inform planning

        Kahane1999“A series of imaginative but plausible and well-focused stories of the future” (pp.511)Plausible stories of the future

        Kloss1999“Scenarios are literally stories about the future that are plausible and based on analysis of the interaction of a number of environmental variables” (pp.73)Informed, plausible stories about the future

        Wilson2000“Scenarios are a management tool used to improve the quality of executive decision making and help executives make better, more resilient strategic decisions” (pp.24)Improved executive strategic decision making

        Godet2001“A scenario is simply a means to represent a future reality in order to shed light on current action in view of possible and desirable futures” (pp.63)A represented future reality

        3. THE METHODOLOGY AND MODEL

        The main purpose of this research is to create scenarios facing Iran petroleum products’ development. To do this, as it is shown in Figure 6, basic data on petroleum products were gathered from internal and external resources using a PESTEL framework of Porter. Then a questionnaire was designed with 22 factors and Delphi method was used to collect the required data. After that, following a scenario development model and Micmac software, 4 scenarios were developed.

        Figure 6

        The Research Process

        4. THE SCENARIO PLANNING PROCESS

        One of the best scenario planning models, which is illustrated as Figure 7, is used to advance the process of this research[2]. This model involves the following steps:

        (1)Clarifying the focus of the scenarios (a focal problem)

        (2)Identifying future changes and their driving forces

        (3)Identifying the critical uncertainties which could lead to distinctly different futures

        (4)Fleshing out the major characteristics and development stories for each scenario

        (5)Identifying the major implications of scenarios on the organization

        Figure 7

        The Scenario Development Process

        Developed scenarios provide a context for examining the risks and opportunities associated with different strategic choices or policy options. They become a tool to examine the future consequences of decisions which are made today.

        5. BUILDING SCENARIOS

        5.1 Step 1: The Focal Problem

        Scenario planning begins by identifying a strategic issue. There are an infinite number of stories about the future. The challenge is to focus on those stories that are important. The first step in the process is to agree on the strategic issue we want to address, typically in the form of a “focal” problem. The focal problem ensures that the scenarios are relevant to the strategic issue at hand or to the strategic decision under consideration. Often, the focal problem is informed by interviews at the onset of a project.

        5.2 Step 2: Driving Forces

        The second step in the scenario planning process is to identify the driving forces of future changes. The scenarios will ultimately be stories describing how different sets of interrelated forces lead to different future outcomes. Identifying the driving forces of the focal problem might involve simply constructing a list. An alternative approach is to pose a question about change.

        5.3 Step 3: Critical Uncertainties

        The third step in the process is to identify critical uncertainties. Our purpose in building scenarios is to explore the boundaries of uncertainties and to look for a broad range of future outcomes. The emphasis is on divergence not convergence. Some driving forces are more important than others and some are more uncertain than others. Driving forces that have a narrow range of future outcomes are defined as “pre-determined”. We need to include them in all the scenarios, but they do not lead to different scenarios.

        5.4 Step 4: Scenario Framework, Characteristics, and Storylines

        The critical uncertainties may be interpreted as continuums and represented as orthogonal dimensions as shown in Figure 8. Each quadrant represents a unique combination of the critical uncertainties - a 2×2 matrix of possible future outcomes. In today’s economic climate, there is an increasing emphasis on cost reduction and increased efficiency[13]. For example, the upper right quadrant defines a future of high carbon costs and the development of disruptive technologies. The scenario question becomes: How does that future come about? What developments need to occur for that future to emerge? What are the major characteristics that would describe this scenario? We have named this scenario Technology Forced. In this way, the logic for 4 distinct but plausible scenarios is established - and the real fun of fleshing out the future begins.

        Figure 8

        A 2×2 Matrix of Scenario Planning

        Having defined a logical framework, involves identifying major characteristics and building a storyline for each scenario. Characteristics are generated in a creative brainstorming session to describe the future end state. The list of driving forces provides a basis for defining the initial set of characteristics. A storyline is then constructed outlining the path from the present to the future. In this way, scenarios are fleshed out into plausible stories of the future. The intent is not to tell “true” stories of the future. The “real” future will likely contain elements of all four scenarios. The goal is to learn from the scenarios, to gain insights on what could change, why it could change and what this knowledge might mean for strategic decisions.

        5.5 Step 5: Monitoring the Future

        Having developed the scenarios and having made strategic decisions, it is valuable to monitor ongoing change. The scenarios provide a basis for defining signposts for each scenario. Scenario signposts serve as early warning system that signals that a particular scenario is emerging. Watching for these signals allows an organization to make sense of change on an ongoing basis and to react more quickly than competitors to significant changes in the business environment.

        6. RESEARCH RESULTS

        6.1 Step 1: The Focal Question

        The purpose of this step is to determine the focal problem of the research. Utilizing viewpoints of professors and experts of petroleum products scenarios, the problem was appropriately identified. Data and resources used to identify the focal problem were Iran’s perspective document, development plans, and local and international research on petroleum industry, petrochemical industry, and the related industries. The tools of data collection were open interviews and library studies. The output of this step is identifying the focal problem with its important ambiguity, complexity, and significance for the country.

        6.2 Step 2: Driving Forces

        The purpose of this step is to identify the key factors for creating petroleum products scenarios. Data and resources used to identify the key factors were Iran’s perspective document, development plans, and local and international research on petroleum industry, petrochemical industry, and the related industries. The tools of data collection in this step include a Delphi approach, viewpoints of experts, benchmarking, and PESTEL model. Results of this step include an identification of 235 factors in economical areas, political areas, social areas, legal areas, environmental areas, and technological areas that eventually resulted in selecting 22 factors and eventually by expert opinions 2 factors of “political relations” and “the government’s dependence on petroleum” were selected for creating scenarios in a 2×2 matrix. These 22 factors are illustrated as Table 3.

        Table 3

        The Selected Key Factors

        NoAreasKey factors

        1EconomicalDependence of the government’s budget on petroleum

        2government non-oil revenues

        3Global demand for oil

        4Discovering new resources

        5using alternative fuels

        6Government economic policies

        7PoliticalSanctions and international pressures

        8Adventure of oil producer countries

        9Regional crises

        10Iran's position in the OPEC

        11Iran's foreign policies

        12SocialLocal Labor Market conditions

        13Consumption patterns

        14Culture of oil companies

        15TechnologicalInvestment in technological areas

        16Technological complexity

        17Ability of local researchers

        18EnvironmentalEnvironmental pollutions

        19Decrease in energy sources

        20LegalThe government laws directly related to the oil field

        21The government laws indirectly related to the oil field

        22International law

        6.2.1 Key Factors Influencing the Development of Petroleum Products

        As mentioned before, 22 factors were identified as key factors influencing the development of Iran’s petroleum products. MicMac software was used to identify these key factors. The cross impact matrix was analyzed in 6 steps using MicMac Software. These steps are as the following respectively:

        (1)Systematic perception and observation of the system’s stability or lack of stability.

        (2)Identifying direct and indirect influences of variables which have the high degree of effectiveness.

        (3)Identifying the main factors and using them in scenario planning.

        (4)Perception of the whole system and abstinence from trivial analysis.

        (5)Identifying the factors that cause instability of the system (factors that should be managed).

        (6)Identifying the environment through impact assessment.

        Extracting 22 factors, a 22×22 matrix was formed in MicMac Software. The matrix degree of filling was 94/42 percent (Table 4), this shows that the selected factors have high and diffused influence on each other and the system is instable. From 457 assessable relations in this matrix, 27 relations were zero (5%); this means that the factors do not have any influence on each other. Based on the statistical indexes with two data rotation, the matrix has 100% desirability and optimality that shows the high reliability of the questionnaire and the responses.

        Table 4

        Characteristic of Factors

        IndicatorsValue

        Matrix size 22

        Number of iterations2

        Number of zeros27

        Number of ones68

        Number of twos274

        Number of threes115

        Total457

        Fill rate94.42149%

        6.3 Step 3: Critical Uncertainties

        In a cross impact matrix, sum of the numbers in rows of each variable shows its influence and sum of the numbers in columns of each variable shows its dependence from other variables. According to the analytical results of this matrix, “political relations” and “the government’s dependence on petroleum” have the highest degree of influence and are selected as critical uncertainties factors. Direct, indirect, and potential maps are illustrated in Figures 9 to 13.

        Figure 9

        Displacement Map

        Table 5

        Areas, Key Factors, and Their Abbreviations

        NoAreasKey factorsAbbreviation

        1EconomicalDependence of the government’s budget on petroleumDGBP

        2government non-oil revenuesGNOR

        3Global demand for oilGDO

        4Discovering new resourcesDNR

        5using alternative fuelsUAF

        6Government economic policiesGEP

        7PoliticalSanctions and international pressuresSIP

        8Adventure of oil producer countriesAOPC

        9Regional crisesRC

        10Iran's position in the OPECIPO

        11Iran's foreign policiesIFP

        12SocialLocal Labor Market conditionsLLMC

        13Consumption patternsCP

        14Culture of oil companiesCOC

        15TechnologicalInvestment in technological areasITA

        16Technological complexityTC

        17Ability of local researchersALR

        18EnvironmentalEnvironmental pollutionsEP

        19Decrease in energy sourcesDES

        20LegalThe government laws directly related to the oil fieldDLDROF

        21The government laws indirectly related to the oil fieldDLIROF

        22International lawIL

        国产精品欧美成人片| 毛茸茸的女性外淫小视频| 久久精品天堂一区二区| 国产网站一区二区三区| 亚洲成av人片在www| 国产精品99久久精品爆乳| 麻豆久久久国内精品| 一本久道久久丁香狠狠躁| 国产大片内射1区2区| 天天看片视频免费观看| 久久中文字幕av一区二区不卡| av天堂精品久久久久| 91网红福利精品区一区二| 日本人妻高清免费v片| 一区二区三区国产精品乱码| 欧美 日韩 人妻 高清 中文| 日韩电影一区二区三区| 国产精品激情综合久久| 国产青春草在线观看视频| av熟妇一区二区三区| 激情航班h版在线观看| 骚小妹影院| 北条麻妃毛片在线视频| 亚洲中文字幕av一区二区三区人 | 国产免费av片无码永久免费| 亚洲av无码日韩精品影片| 欧美日韩国产另类在线观看| 有码视频一区二区三区| 亚洲熟妇丰满多毛xxxx| 蜜桃视频一区二区三区在线观看| 无码不卡一区二区三区在线观看| 国产精品一区二区三区蜜臀| 国产91在线播放九色快色 | 久久中文字幕亚洲综合| 日产乱码一二三区别免费l| 伊人色综合视频一区二区三区| 91精品国产91久久久无码色戒| 中文字幕一区二区黄色| 无码va在线观看| 97人妻视频妓女网| 一区二区三区熟妇人妻18|