五百梯生物礁气藏精细描述
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摘要
五百梯构造位于四川省开江县和重庆市开县境内的五百梯～义和场一带,包括义和、中和、讲治、南雅等乡镇辖区。五百梯构造属于川东大天池高陡构造带北倾末端的一个短轴状背斜,长约24km,东西最宽处约6.5km,剖面形态为箱状。五百梯生物礁气藏发育于五百梯构造东南部的鼻状构造内。五百梯生物礁气藏发育层位为上二迭统长兴组。1992年12月15日长兴生物礁气藏正式投入试采。2001年以上报探明储量47.23×10~8m~3为基础编制了长兴生物礁气藏开发方案。截止2010年4月,气藏共投入生产井8口,累计产水11.81×103m~3,累计产气16.07×10~8m~3。
该气藏在开发过程中主要呈现出一下矛盾:
(1)部分构造需要进一步落实。
(2)气藏各井产能普遍偏低,产能差异大,储量动用不均衡。
(3)剩余气储量及分布不清,为气藏进一步挖潜带来困难。
本文以五百梯长兴组生物礁气藏为研究对象,在前人研究的基础上,以储层地质学、油气藏开发地质学、沉积学、测井学等理论为指导,综合应用地质、测井、试井、岩心分析化验、开发动态等多种资料对五百梯生物礁气藏的构造、地层特征、沉积相、成岩作用、储层特征、流体性质、气藏连通性、气藏类型、气藏压力系统、生产动态特征、产能特征等进行研究。在此基础上,运用计算机油气藏三维地质建模技术建立气藏的静态模型,对气藏的静动态储量及储量动用情况进行评价,通过建立数值模拟模型、历史拟合等阶段性工作预测气藏目前的剩余气分布规律,本文还对剩余气分布规律的研究方法进行了有益的探索,首次使用井区储量评价法计算气藏剩余气储量分布情况。最后结合数值模拟研究成果、气藏储量动用程度评价及井区储量评价法分析气藏开发潜力。经研究,气藏南部开发潜力较大,可考虑结合地震资料,对天东021-4井作侧钻修井挖掘气藏潜力。
Wubaiti structure is located at Wubaiti ~ Yihechang field area within Kaijiang County in Sichuan Province and Kaixian County in Chongqing Municipality,including theYihe,Zhonghe,Jiangye,Nanye and other township’s area.Wubaiti structure is a Minor axis anticline at the northern end of the steep Datianchi Tectonic zone in Eastern Sichuan.ti is about 24km long and about 6.5km wide in the direction of EW.It has a form of a box-shaped section. Wubaiti reef gas reservoirs developes in a nosing structure within southeastern Wubaiti tectonic .Wubaiti reef gas reservoir developes on the Changxin formation of the Upper Permian series . On December 15, 1992,Changxing reef gas reservoir was put into production test.In 2001,the development program of Changxing reef gas reservoir was prepared on the basis of the Proved reserves about 47.23×10~8m~3. By April 2010, a total gas production well 8, the cumulative water production 11.81×10~8m~3, total gas production 16.07×10~8m~3
The gas reservoir in the development process, showing what the main conflict:
First, part of the tectonics needs to be further implemented.
Second, the wells’productivity of the gas reservoir is generally low and quite different ,and producing reserves is unbalanced.
Third, the remaining gas reserves and the distribution is unclear, that makes tapping the potential difficult.
In this paper, aiming at the Changxing reef gas reservoir of Wubaiti ready for research.Based on previous research,take the reservoir geology ,geology in reservoir development, sedimentology ,logging as a guide .Comprehensively apply the geology,logging,testing,analysis of drilling core ,production performance data and so on to studuy the gas reservoir’s structure, stratigraphy characteristics, facies, diagenesis, reservoir characteristics,fluid properties, connectivity, gas reservoirs type,pressure system,dynamics of production, productivity features and so on. On this basis,using computer reservoir three-dimensional geological modeling technology to build the static model of the reservoir,evaluate the static and dynamic reserves and the utilization of the reserves.Through the establishment of numerical simulation model, history matching and other phases to forecast current distribution of remaining gas.This paper also makes some useful exploration in the field of the remaining gas distribution method,and use Well Reserves Evaluation Method to calculate the distribution of the remaining gas reserves.Finally, Combinate the numerical simulation results,evaluation of the producing reserves and WREM to analyze the potential of this reservoir.Through the comprehensive research,we can draw the conclusion that southern reservoir has huge potential and suggest sidetracking the td021-4 well so as to tap Hydrocarbon potential.
该气藏在开发过程中主要呈现出一下矛盾:
(1)部分构造需要进一步落实。
(2)气藏各井产能普遍偏低,产能差异大,储量动用不均衡。
(3)剩余气储量及分布不清,为气藏进一步挖潜带来困难。
本文以五百梯长兴组生物礁气藏为研究对象,在前人研究的基础上,以储层地质学、油气藏开发地质学、沉积学、测井学等理论为指导,综合应用地质、测井、试井、岩心分析化验、开发动态等多种资料对五百梯生物礁气藏的构造、地层特征、沉积相、成岩作用、储层特征、流体性质、气藏连通性、气藏类型、气藏压力系统、生产动态特征、产能特征等进行研究。在此基础上,运用计算机油气藏三维地质建模技术建立气藏的静态模型,对气藏的静动态储量及储量动用情况进行评价,通过建立数值模拟模型、历史拟合等阶段性工作预测气藏目前的剩余气分布规律,本文还对剩余气分布规律的研究方法进行了有益的探索,首次使用井区储量评价法计算气藏剩余气储量分布情况。最后结合数值模拟研究成果、气藏储量动用程度评价及井区储量评价法分析气藏开发潜力。经研究,气藏南部开发潜力较大,可考虑结合地震资料,对天东021-4井作侧钻修井挖掘气藏潜力。
Wubaiti structure is located at Wubaiti ~ Yihechang field area within Kaijiang County in Sichuan Province and Kaixian County in Chongqing Municipality,including theYihe,Zhonghe,Jiangye,Nanye and other township’s area.Wubaiti structure is a Minor axis anticline at the northern end of the steep Datianchi Tectonic zone in Eastern Sichuan.ti is about 24km long and about 6.5km wide in the direction of EW.It has a form of a box-shaped section. Wubaiti reef gas reservoirs developes in a nosing structure within southeastern Wubaiti tectonic .Wubaiti reef gas reservoir developes on the Changxin formation of the Upper Permian series . On December 15, 1992,Changxing reef gas reservoir was put into production test.In 2001,the development program of Changxing reef gas reservoir was prepared on the basis of the Proved reserves about 47.23×10~8m~3. By April 2010, a total gas production well 8, the cumulative water production 11.81×10~8m~3, total gas production 16.07×10~8m~3
The gas reservoir in the development process, showing what the main conflict:
First, part of the tectonics needs to be further implemented.
Second, the wells’productivity of the gas reservoir is generally low and quite different ,and producing reserves is unbalanced.
Third, the remaining gas reserves and the distribution is unclear, that makes tapping the potential difficult.
In this paper, aiming at the Changxing reef gas reservoir of Wubaiti ready for research.Based on previous research,take the reservoir geology ,geology in reservoir development, sedimentology ,logging as a guide .Comprehensively apply the geology,logging,testing,analysis of drilling core ,production performance data and so on to studuy the gas reservoir’s structure, stratigraphy characteristics, facies, diagenesis, reservoir characteristics,fluid properties, connectivity, gas reservoirs type,pressure system,dynamics of production, productivity features and so on. On this basis,using computer reservoir three-dimensional geological modeling technology to build the static model of the reservoir,evaluate the static and dynamic reserves and the utilization of the reserves.Through the establishment of numerical simulation model, history matching and other phases to forecast current distribution of remaining gas.This paper also makes some useful exploration in the field of the remaining gas distribution method,and use Well Reserves Evaluation Method to calculate the distribution of the remaining gas reserves.Finally, Combinate the numerical simulation results,evaluation of the producing reserves and WREM to analyze the potential of this reservoir.Through the comprehensive research,we can draw the conclusion that southern reservoir has huge potential and suggest sidetracking the td021-4 well so as to tap Hydrocarbon potential.
引文
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[2]甘玉青,肖传桃,张斌.国内外生物礁油气勘探现状与我国南海生物礁油气勘探前景[J].海相油气地质.2009.14(1):16-20.
[3]王允诚,吕运能,曹伟.气藏精细描述[M].四川科学技术出版社,2002.
[4]裘怿楠,陈子琪等.油藏描述[M].北京:石油工业出版社,1996.
[5]刘译容,信荃麟等.油藏描述原理及方法技术[M] .石油工业出版社,1993
[6]王允诚.油气储层地质学[M] .地质出版社,2008
[7]王志章等.现代油藏描述技术[M] .石油工业出版社,1999
[8]周路,彭大钧.早期油藏描述技术与应用[M] .石油工业出版社,2006
[9]陆亚秋,龚一鸣.海相油气区生物礁研究现状、问题与展望[J].地球科学—中国地质大学学报.2007.32(6):871-878.
[10]洪海涛,王一刚,杨天泉等等.川北地区长兴组沉积相和生物礁气藏分布规律[J].天然气工业.2008.28(1):38-41.
[11]刘克难等.四川盆地地温泉井～五百梯区块维地震勘探总结报告[R].四川:四川石油管理局地球物理勘探公司(内部资料),2008.
[12]陈京元等.五百梯气田石炭系气藏精细气藏描述[R].四川:中石油西南油气田分公司勘探开发研究院(内部资料),2006.
[13]庞宇来等.五百梯气田长兴气藏挖潜方案[R].重庆:中石油西南油气田分公司重庆气矿(内部资料),2006.
[14]邵勇等.五百梯构造长兴组生物礁储层、资源评价及滚动勘探目标选择[R].重庆:中石油西南油气田分公司重庆气矿(内部资料),2005.
[15]鲁洪江,蒋和煦等.典型老气藏描述研究[R].四川:中石油西南油气田分公司勘探开发研究院(内部资料),2010.
[17]杨辉廷,颜其彬,李敏.油藏描述中的储层建模技术[J].天然气勘探与开发,2004,27(3):45～49.
[19]张婷,徐守余.储层地质建模技术研究与展望[J].长春理工大学学报,2009,4(4):191～192.
[20]Damsleth , E1et al1.A two - stage stochastic model applied to North Sea reservoir[J].Journal of Petroleum Geology,1992 (44):402～408.
[21]胡向阳,熊琦华.储层建模方法研究进展[J].石油大学学报(自然科学版) ,2001,25 (1):107～112.
[22]张团峰,王家华.试论克里金估计与随机模拟的本质区别[J].西安石油学院学报,1997,12 (2):52～55.
[23]吕晓光,王德发.储层地质模型及随机建模技术[J].大庆石油地质与开发,2000 ,19 (1):10～16.
[24]穆龙新,裘怿楠.不同开发阶段的油藏描述[M].北京:石油工业出版社. 1999.
[25]张永贵,李允.储层地质统计随机模拟[J].石油大学学报(自然科学版),1998,22 (3): 113～119.
[26]刘宝和等.中国石油石油探勘开发百科全书-开发卷[M].石油工业出版社. 2008.
[27] Srivastava RM.An overview of stochastic methods for reservoir charactrization[M].Yarus JM,Chambers RL.Stochast modeling and geostatistics:PrineiPles, methods and cosestudie AAPG ComPuter APPlications in Geology No3,1994:3～16.
[28]王鸣化等.气藏工程[M].北京:石油工业出版社. 1997.
[29]张风波,王怒涛,黄炳光等.计算气井储量新方法[J].西南石油大学学报(自然科学版),2008,30(6),138-140.
[30]郝玉鸿.气井工作制度对弹性二相法计算动态储量的影响[J].天然气工业,1998,18 (5):86-87.
[31] AI-Debouini,R.M,AI-Irhayim,R.A.,AI-aqib,F.M.,andD.M.Morris.Water Drive Performance of the Kirkuk Field of Northernlraq[J].46th Annual SPE- AIME Fall PrePrint no. SPE3437.
[32] Antonellini,M.A.,andA.Aydin,1995,“Effect of Faulting on Fluid Flow in Porous Sandstones: Geometry and Spatial Distribution,”American Association of Petroleum Geology Bulletin,vol.79,PP.642-671.
[33] Baeon,J.R.,and R.H.KemPthorne,“Waterflood Oil Reeovery in Fractured Reservoirs,with Directionally Drilled Wells,”Society of Petroleum Engineering Journal ,August 1984,PP.375-3
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