In the evaluation on offshore gasfields, conventional approaches to determine well spacing are limited by the number of appraisal wells and the availability of geological data. Three universal ones among them were selected as research objectives, including reasonable well-control reserve method, reasonable well productivity method, and reasonable gas recovery rate method. Their key parameters were defined, namely the stable production, reasonable gas recovery rate, years of stable production, and unproductive efficiency at the end of stable production period. Moreover, chart regression dependent on analog data was used to figure out value-taking schemes for each key parameters. And through statistical regression and probability analysis, some empirical charts were built for different types of gas reservoirs with various physical properties. Results show that (i) both table and form of statistical regression can be used to quickly determine the above-mentioned key parameters; (ii) the well-control area and unit-thickness well-control reserve methods formed can be used for direct reading and rapid determining well space, and (iii) after the application to a deep-water A gasfield with low permeability in West Africa, the reasonable spacing ranging from 1,000 m to 1,200 m is fixed. These results may offer experiences on the reasonable determination during field development.
[an error occurred while processing this directive]
[1] 李士伦. 天然气工程[M]. 北京: 石油工业出版社, 2000.
LI Shilun.Natural Gas Engineering[M]. Beijing: Petroleum Industry Press, 2000.
[2] 李士伦. 气田开发方案设计[M]. 北京: 石油工业出版社, 2006.
LI Shilun.Gas Field Development Scheme Design[M]. Beijing: Petroleum Industry Press, 2006.
[3] 吴景春, 顾晓琳. S气田合理井距研究[J]. 科学技术与工程, 2012, 12(2): 425-427.
WU Jingchun, GU Xiaolin.The reasonable well spacing of S gas field[J]. Science Technology and Engineering, 2012, 12(2): 425-427.
[4] 周学民, 郭平, 黄全华, 等. 升平气田火山岩气藏井网井距研究[J]. 天然气工业, 2006, 26(5): 79-81.
ZHOU Xuemin, GUO Ping, HUANG Quanhua, et al.Study on pattern well spacing of volcanic gas reservoir in Shengping gas field[J]. Natural Gas Industry, 2006, 26(5): 79-81.
[5] 李爽, 朱新佳, 靳辉, 等. 低渗透气田合理井网井距研究[J]. 特种油气藏, 2010, 17(5): 73-76.
LI Shuang, ZHU Xinjia, JIN Hui, et al.Study on rational well pattern and well spacing in low permeability gas field[J]. Special Oil & Gas Reservoirs, 2010, 17(5): 73-76.
[6] 王国勇, 刘天宇, 石军太. 苏里格气田井网井距优化及开发效果影响因素分析[J]. 特种油气藏, 2008, 15(5): 76-79.
WANG Guoyong, LIU Tianyu, SHI Juntai.Pattern well spacing optimization and analysis of factors affecting development effect in Sulige gas field[J]. Special Oil & Gas Reservoirs, 2008, 15(5): 76-79.
[7] 张波, 李君, 赖海涛. 苏里格低渗气田井网井距计算方法探讨[J]. 石油化工应用, 2010, 29(6): 42-44.
ZHANG Bo, LI Jun, LAI Haitao.Su Lige infiltrates the gas field pattern well spacing computational method discussion[J]. Petrochemical Industry Application, 2010, 29(6): 42-44.
[8] 崔强, 许文壮, 文玉龙, 等. 神木气田开发井网井距论证方法探讨[J]. 中国石油和化工标准与质量, 2013(21): 164-165.
CUI Qiang, XU Wenzhuang, WEN Yulong, et al.Methods to demonstrate well spacing of development well pattern in Shenmu gasfield[J]. China Petroleum and Chemical Standard and Quality, 2013(21): 164-165.
[9] 何东博, 王丽娟, 冀光, 等. 苏里格致密砂岩气田开发井距优化[J]. 石油勘探与开发, 2012, 39(4): 458-464.
HE Dongbo, WANG Lijuan, JI Guang, et al.Well spacing optimization for Sulige tight sand gas field, NW China[J]. Petroleum Exploration and Development, 2012, 39(4): 458-464.
[10] 孙华超, 夏朝辉, 李陈, 等. 技术经济最优配置的采气速度优化[J]. 断块油气田, 2015, 22(3): 361-363.
SUN Huachao, XIA Zhaohui, LI Chen, et al.Optimization of reasonable gas offtake rate considering technical and economic factors[J]. Fault-Block Oil & Gas Field, 2015, 22(3): 361-363.
[11] 何梦莹, 孙晨祥, 许博文, 等. 气田采气速度对生产动态的影响实验研究[J]. 当代化工, 2017, 46(3): 454-456.
HE Mengying, SUN Chenxiang, XU Bowen, et al.Experimental study on influence of gas recovery rate on production performance in gas fields[J]. Contemporary Chemical Industry, 2017, 46(3): 454-456.
[12] 刘有刚, 颜玉明, 罗保江. 川西梓潼地区高压异常气藏合理采气速度研究[J]. 钻采工艺, 2003, 26(增刊1): 38-41.
LIU Yougang, YAN Yuming, LUO Baojiang.Study on appropriate production rate in high abnormal pressure reservoir at Zitong region of western Sichuan[J]. Drilling & Production Technology, 2003, 26(S1): 38-41.
[13] 郭春秋, 李方明, 刘合年, 等. 气藏采气速度与稳产期定量关系研究[J]. 石油学报, 2009, 30(6): 908-911.
GUO Chunqiu, LI Fangming, LIU Henian, et al.Analysis of quantitative relationship between gas offtake and plateau duration of natural gas reservoir[J]. Acta Petrolei Sinica, 2009, 30(6): 908-911.
[14] 史海东, 王晖, 郭春秋, 等. 异常高压气藏采气速度与稳产期定量关系——以阿姆河右岸B-P气田为例[J]. 石油学报, 2015, 36(5): 600-605.
SHI Haidong, WANG Hui, GUO Chunqiu, et al.Quantitative relationship between gas recovery rate and stable production period of abnormally high pressure gas reservoirs: a case study of B-P gas field on the right bank of the Amu Darya[J]. Acta Petrolei Sinica, 2015, 36(5): 600-605.
[15] 《气藏开发应用基础技术方法》编写组. 气藏开发应用基础技术方法[M]. 北京: 石油工业出版社, 1997.
Editing Group for Development and Application Fundamentals and Technologies for Gas Reservoirs. Development and Application Fundamentals and Technologies for Gas Reservoirs[M]. Beijing: Petroleum Industry Press, 1997.