吐哈盆地红台2块凝析气田开发动态与增产技术研究
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摘要
本文以吐哈盆地红台2块凝析气田为研究对象,以大量现场生产资料为基础,通过对气藏地质特征、开发动态与产能评价以及气田增产工艺技术的综合研究,深化了对气藏地质和生产动态规律的认识,论文采用多种方法计算了气田和单井的动态储量,推导出了红台2块气田的“一点法”产能公式,开展了产能评价和合理配产研究,研制出了专门针对红台2块气田的压裂液体系配方并建立了一套切实可行的压裂增产方案。
本文利用大量开发钻井、录测井、测试及地震资料,应用统计分析、小层对比等技术手段,系统研究了红台2块气田的构造、沉积、储层、流体性质与分布、温压系统等气藏地质特征,分析了方案实施后气田储量变化原因。论文重点研究了红台2块凝析气田的开发动态特征,主要表现为气藏压力持续下降、产量递减幅度大、弹性产率低。研究发现红台2块气田地层压力与累计产气量呈指数相关,根据采气曲线特征,可将气井分为相对稳产型、递减较快型和无稳产期型三种类型。论文采用物质平衡法计算了红台2块凝析气田的动态储量,分别采用产量累计法、流动物质平衡法和油压递减法计算了单井控制储量,并与容积法储量进行了对比,分析了存在比较大差异的原因。论文利用凝析气田的开发理论,应用修正等时试井资料推导了红台2块凝析气田的“一点法”产能公式,在产能标定基础上,基于保护地层能量分析和气井最小携液流量的计算,研究了气井合理配产方案。论文重点研究了红台2块气井的压裂工艺技术,通过实验、模拟和现场实践,不断优化压裂规模和参数设计、材质优选,建立了专门针对红台2块气井的压裂液配方和压裂工艺技术体系。论文同时分析了红台2-15井气体钻井成败的原因,提出采用套管阀筛管完井、非透式可膨胀割缝管完井或实体筛管完井等新工艺、新技术,可以解决气体钻井的防砂问题。
本文对红台2块凝析气田压裂工艺技术的研究成果,现场实施取得了良好的效果;对气藏地质和开采特征的研究成果,可供编制开发调整方案借鉴。
This dissertation aims at Hongtai 2 Block condensate gas-field. By using plentiful in-site materials, comprehensive study including geological characteristics, dynamic performances and enhanced technologies is carried out. Different methods are used to calculate dynamic reserve of the field.“Single-point method”production capacity formula of Hongtai 2 Block gas-filed is derived and production capacity valuation and reasonable production allocation plan are proposed. Schemes such as fracturing scale and parameter optimization, prescription of fracture fluid, selective preference of propping agent are proposed pointedly.
By using plentiful materials of drilling, logging, testing and seismic data, this dissertation studies geological characteristics such as structure, sedimentation, reservoir, fluids, pressure and temperature in a systematic way. Reasons that lead to the change of reserve are analyzed in depth. The dissertation give great importance in the study of dynamic performance of Hongtai 2 gas-field, dynamic characteristics includes continuing pressure decline, high-speed production capacity decrease and low elastic production rate. The reservoir pressure has an exponential correlation with cumulative production and gas wells can be divided into three types by gas-producing curves. Material balance method is used to calculate dynamic reserve of Hongtai 2 gas-field. Cumulative production method, fluid material balance method and tube pressure decreasing method were used to calculate single-well control reserve respectively. By using revised isochronal testing results,“single-point method”production capacity formula of Hongtai 2 Block gas-filed is derived and the open-flow capacity is calculated. Aim at underground energy preserving and liquid- carrying, reasonable production allocation plan is studied and reasonable production allocation of Hongtai 2 Block gas-filed was proposed. This thesis made a detailed study of fracturing technology of Hongtai 2 Block gas-field. By using testing, modelling and in-site practice methods, schemes such as fracturing scale and parameter optimization, prescription of fracture fluid, selective preference of propping agent are proposed pointedly. At the same time, operation of HT2-15 gas drilling was studied, three improving advice was proposed.
The study results of fracturing technology of Hongtai 2 Block gas-field have obtained great success in in-site practices, study results of geological characteristics and dynamic performances can be used as references in making adjusting plan.
本文利用大量开发钻井、录测井、测试及地震资料,应用统计分析、小层对比等技术手段,系统研究了红台2块气田的构造、沉积、储层、流体性质与分布、温压系统等气藏地质特征,分析了方案实施后气田储量变化原因。论文重点研究了红台2块凝析气田的开发动态特征,主要表现为气藏压力持续下降、产量递减幅度大、弹性产率低。研究发现红台2块气田地层压力与累计产气量呈指数相关,根据采气曲线特征,可将气井分为相对稳产型、递减较快型和无稳产期型三种类型。论文采用物质平衡法计算了红台2块凝析气田的动态储量,分别采用产量累计法、流动物质平衡法和油压递减法计算了单井控制储量,并与容积法储量进行了对比,分析了存在比较大差异的原因。论文利用凝析气田的开发理论,应用修正等时试井资料推导了红台2块凝析气田的“一点法”产能公式,在产能标定基础上,基于保护地层能量分析和气井最小携液流量的计算,研究了气井合理配产方案。论文重点研究了红台2块气井的压裂工艺技术,通过实验、模拟和现场实践,不断优化压裂规模和参数设计、材质优选,建立了专门针对红台2块气井的压裂液配方和压裂工艺技术体系。论文同时分析了红台2-15井气体钻井成败的原因,提出采用套管阀筛管完井、非透式可膨胀割缝管完井或实体筛管完井等新工艺、新技术,可以解决气体钻井的防砂问题。
本文对红台2块凝析气田压裂工艺技术的研究成果,现场实施取得了良好的效果;对气藏地质和开采特征的研究成果,可供编制开发调整方案借鉴。
This dissertation aims at Hongtai 2 Block condensate gas-field. By using plentiful in-site materials, comprehensive study including geological characteristics, dynamic performances and enhanced technologies is carried out. Different methods are used to calculate dynamic reserve of the field.“Single-point method”production capacity formula of Hongtai 2 Block gas-filed is derived and production capacity valuation and reasonable production allocation plan are proposed. Schemes such as fracturing scale and parameter optimization, prescription of fracture fluid, selective preference of propping agent are proposed pointedly.
By using plentiful materials of drilling, logging, testing and seismic data, this dissertation studies geological characteristics such as structure, sedimentation, reservoir, fluids, pressure and temperature in a systematic way. Reasons that lead to the change of reserve are analyzed in depth. The dissertation give great importance in the study of dynamic performance of Hongtai 2 gas-field, dynamic characteristics includes continuing pressure decline, high-speed production capacity decrease and low elastic production rate. The reservoir pressure has an exponential correlation with cumulative production and gas wells can be divided into three types by gas-producing curves. Material balance method is used to calculate dynamic reserve of Hongtai 2 gas-field. Cumulative production method, fluid material balance method and tube pressure decreasing method were used to calculate single-well control reserve respectively. By using revised isochronal testing results,“single-point method”production capacity formula of Hongtai 2 Block gas-filed is derived and the open-flow capacity is calculated. Aim at underground energy preserving and liquid- carrying, reasonable production allocation plan is studied and reasonable production allocation of Hongtai 2 Block gas-filed was proposed. This thesis made a detailed study of fracturing technology of Hongtai 2 Block gas-field. By using testing, modelling and in-site practice methods, schemes such as fracturing scale and parameter optimization, prescription of fracture fluid, selective preference of propping agent are proposed pointedly. At the same time, operation of HT2-15 gas drilling was studied, three improving advice was proposed.
The study results of fracturing technology of Hongtai 2 Block gas-field have obtained great success in in-site practices, study results of geological characteristics and dynamic performances can be used as references in making adjusting plan.
引文
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3陈赓良,王开岳.天然气综合利用[M].北京:石油工业出版社,2004:1～2
4黄平辉,张淑英等.中国天然气资源现状、需求展望及对策[J] .新疆石油地质,2005;(1):105～107
5王允诚,孔进祥,李海平等.气藏地质[M].北京:石油工业出版社,2004:1～2
6 Dubrule O , Basire C , Bombard S.Reservoir Geology Using 3D Modelling Tools.SPE38659.
7钟孚勋.气藏工程[M].北京:石油工业出版社,2001
8 M.Ding,A.Kantzas,D.Lastockin.Evaluation of Gas Saturation During Water Imbibition Experiments[J]. KPT October 2006,Volume 45, No. 10:29～35.
9 McCain Jr WD.The Properties of Reservoir Fliuds.PennWell Books,1990
10 A.M.Elsharkawy.Efficient Methods for Calculations of Compressibility, Density,and Viscisity of Natural Gases[J]. KPT June 2006,Volume 45, No.6:55～61
11 [美]史蒂文等箸,冉新权等译.异常高压气藏[M].北京:石油工业出版社,2003
12 [法]鲁卡·考森蒂诺箸,李阳等译.油藏评价一体化研究[M].北京:石油工业出版社,2003
13 E.F.Delauretis,H.W.Yarranton and R.O.Baker.Application of Material Balance and Volumetrics to Determine Reservoir Fluid Saturations and Fluid Contact Levels[J]. KPT March 2008,Volume 47, No.3:39～47
14 M.Sorous,N.Alizadeh. Underground Gas Storage in a Partially Depleted Gas Reservoir[J].KPT February 2008, Volume 47, No. 2:17～21
15张成学,肖荣革等.论吐哈盆地台北凹陷西部双层结构[J].天然气工业,2008;(2):58～60
16秦长文,李宏伟等.吐哈盆地侏罗系层序地层格架的建立[J].新疆石油地质,2004(1):33～36
17马广明,曹建军等.红台2块气藏地质与开采特征研究[J].石油天然气学报,2008(2):441～443
18宋维琪,徐文会.含气储层预测方法与应用[J].天然气工业,2008;(2):61～63
19 Dake LP.The Practice of Reservoir Engineering.Elsevier,Amsterdam
20袁士义等.凝析气藏高效开发理论与实践[M].北京:石油工业出版社,2003
21 Determining Effective Drainage Area for Tight Gas wells[J].JPT October 2006:59～60
22孙志道等.凝析气藏早期开发气藏工程研究[M].北京:石油工业出版社,2003
23 Ahmed T, Mckinney P D. Advanced Reservoir engineering[M]. Amsterdam: Elsevier, 2005.
24 Henderson G D,et al. An Investgation Into The Processes Governing Flow And Recovery In Different Flow Regimes Present In Gas Condensate Reservoirs[J]. SPE26661.
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