储量及play相关概念

1、I.Play的定义Play: one or more geologically (or engineering) related prospects.一个或多个地质学(或工程角度)角度相关联的前景预期的综合不同学者给出的定义不同Despite the differences of emphasis, a basic consensusclearly exists that plays are groups of related hydrocarbon accumulations and/or prospects, characterized by combinations of similar

2、 geologic parameters such as charge type, reservoir-seal couple with or without trap style, essential to the processes of petroleum generation, migration, accumulation, and retention. Plays should have a clear geographic distribution that can be defined by polygons on the ground and/or be confined t

3、o limited stratigraphic intervals.尽管强调的差异,明显存在一个根本的共识,PLAY是一组相关的油气成藏和/或前景的组合,这一组合内具有相似的地质参数,如源岩类型(charge type)、储盖组合以及有无石油生成、运移、储存和成藏等过程中必不可少圈闭类型.PLAY应该具有一个清楚的地理分布,这一地理分布能够在地面用多边形定义和 /或被限制在一定的地层间隔内.Play definition1. Part of a petroleum system2. A group of HC accumulations and /or prospects3. They sha

4、re similar geological features such as reservoir, trap style4. Have a clear geographic distribution that can be defined by polygons on the ground and be confined to a particular stratigraphic interval1 .局部石油系统2 .碳氢化合物(HC Hydrocarbon Compounds )和/或前景的组合3 .具有相似的地质学特征如储层和圈闭类型4 .具有一个可以通过地面多边形定义和有地层间隔限制的

5、清楚的地理展布PLAY可以进一步延伸定义为未钻探的前景区和已经发现的石油池( pool of petroleum)的组合Doust (2021)的三层分层架构 PLAY定义的依据：1) 油气供给系统(petroleum charge system定义于PLAY隶属的油气供给系统是最普通的,也就是说,石油或天然气产 生于那些地层,或者是对于被认定是已经生成的油气其在到达最终成藏目的 层的过程中运移机制和时序2)储盖地层组合及岩相油气富集发生的储集层或者是被认为是可能发生油气聚集的储集层,这一概 念通常通过地层名定义或者是储层岩相,这一岩相相变很快并且夹层具有不 同的岩性.3)圈闭类型通常认为是地

6、理上最受限制的,包含的圈闭类型一般被认为是一个PLAY的最具特质的因素.2. Play ClassificationProven play, identified play, established play: hydrocarbon accumulations have been found已发现的油气成藏New play,conceptual play no discovery made yet.仍未被发现的1 . Speculative plays where the play may not yet have been identified in a particular area b

7、ut, either conceptually or by analogy with similar situations in other similar basins, it is considered that it may be present.2 . Unproven plays where a play may have been identified in an area and the concept shown to work, but as yet it has not yet been shown by drilling to be commercial.3 . Emer

8、ging plays, which have been shown to be commercial, include productive fields and, possibly, potentially commercial prospects.4 . Mature plays, proven plays that have had a long period of production, representing a fairway or trend that is in an advanced stage of exploration and development.5 .推测的PL

9、AY :仍未在一个特殊区域被识别的,但是无论是概念上还是同其 他相似盆地进行类比,都可能存在的.6 .未被证实的PLAY:已经在一定区域内识别并且可以进一步工作的理念,但 却仍然没有显示商业的钻采.7 .已经形成的PLAY:已经显示出具有商业价值,包括生产领域,和可能的潜 在的商业前景.8 .成熟的PLAY:已经进行了长期的生产,代表显示后期的勘探和开发趋 势3. Play FairwayThe geographical area over which the play is believed to extend is the play fairway. The extent of the f

10、airway is determined initially by the depositional or erosional limits of the gross reservoir unit ,but may also be limited by the known absence of any of the other factors .这个自己看着译吧4. Play mapPlay summary maps show the superimposed boundaries of favorable areas for all key geologic controls of oil

11、and gas occurrence-source, migration, reservoir, trap, timing, seal, preservation, and recovery-for a genetic group of prospects or fields. These maps are invaluable for high-grading the best areas, thereby reducing exploration risks, and for quantitatively estimating hydrocarbon volume and success

12、factors in both prospect and play assessment.A Caution For Play MapPerhaps the greatest danger in these maps is the false sense of precision implied by the sharp boundaries. The problem stems from the demands in this business that the explorers set down the best interpretation of the data available,

13、 and then act upon it. Uncertainty will ever be the only certainty in oil and gas exploration. Despite the danger, long before any confidence can be placed in them, play maps should be made in new ventures and updated continually as long as the search lasts.这些图存在的最大是锋利的边界产生的高精确度的错觉,这一问题来源于勘探家以为最求和可利

14、用资料的最优解.在油气勘探过程中不确定性是唯一确定的,尽 管存在这样的风险,成藏组合绘图在一个新的工程进行过程是必不可少的,并且应该随着勘探的进行而不断更新.关于储量proven reserves 探明储量1. Petroleum Resource Volumes 油气资源量分类依据：1 成熟度 Maturity statusDiscovered or Undiscovered P.I.I.PRecoverable Portions i.eReservesContingent and Prospective Resources2物质化确定水平Level of certainty of mate

15、rialisingProved and Unproved储量估算方法：1容积法2分析性能3应用数学模型4类比相近储层储量分类方法探明储量Proved reserves反映的是投资人未来收益的.可能储量和地质储量probable and possible reserves对于权衡优先资本支出和收益的商业收购决策时非常重要的储量增长reserve growth储量增长由于以下因素：1已发现油田内的钻井和生产进步,之前未未知的新区块 pool和储层的发 现2勘探技术的进步使得在现有油田内发现新的目标3钻井技术的进步是在油田勘探初期那些被认为不能收回本钱的开采工作变 成可能并被重新考虑.4提升采收率技

16、术的提升增加了现有油田的储量远景资源量根据过去的评价思路、评价方法和参数标准估算的资源量地质资源量在目前的技术条件下最终可以探明的油气的总量,包括已探明包括已经采出和尚未探明的可米资源量可采资源量是在未来可预见的经济技术条件下可以采出的油气的总量包括已经采出的量Proved Reserves探明储量概念通过地质和工程数据分析,在现有的经济条件、工程方法和政府法规下,合理确信估计在一定时期有商业开采价值的油气总量探明储量估算1确定性方法2可能的方法Probable reserves 可能储量最可能回收价值的未探明储量Possible Reserves 地质储量同可能储量probable rese

17、rve比,地质储量是具有更低的可收回概率的未探明储里(5) Categorize by UncertaintyThe system accommodates muKipie approaches to assessing uncertatnty.Probabilistic Methods2P scenario - more likely than i?otLes likely than Probable3P scenario - unlikcfyI ess likely than Proved More Likely than Possibleressonflbly certainDeterm

18、inistic Methodssemn 当OL1P scenario - high degree of confidence100%1P 2PEURcum prod基于不确定性的油气储量分类系统SPE/AAPG/WPC/SPEE油气资源/储量分类2007.1原地原蛤油气总里已发理的原地原蛤油气里未发现的原地 原始油气里商业的 次商业的 潜在商业的原地油气里的不确定 性+采收率的不确定性历史产里根据销售量的技术郁定性进行矮Total Inrtjally-in-Place (IIP)Undiscovered IIPCommercialDtscovered IIPUnrecorableRecoverableg uxrkml.AmM 工Potential Commensf 80 _CL QU8SZ3 dfogAOHIOPRODUCTIONCONTINGEXTRESOURCES3CPROSPECTIVE RESOURCESRange of U