天然气地球科学 ›› 2020, Vol. 31 ›› Issue (9): 1195–1203.doi: 10.11764/j.issn.1672-1926.2020.06.005

• 天然气地质学 •    下一篇

四川盆地中国石化探区天然气勘探开发领域与技术攻关方向

龙胜祥(),刘娅昭,许华明,陈前,程喆   

  1. 中国石化石油勘探开发研究院,北京 100083
  • 收稿日期:2020-05-12 修回日期:2020-05-26 出版日期:2020-09-10 发布日期:2020-09-04
  • 作者简介:龙胜祥(1959-),男,四川富顺人,教授级高级工程师,博士,主要从事油气(包括页岩油气)勘探开发研究.E-mail:lsx.syky@sinopec.com.
  • 基金资助:
    中国工程院咨询项目“我国能源技术革命的技术方向和体系战略研究”(2015-ZD-09)

Exploration domains and technological breakthrough directions of natural gas in SINOPEC exploratory areas, Sichuan Basin

Sheng-xiang LONG(),Ya-zhao LIU,Hua-ming XU,Qian CHEN,Zhe CHENG   

  1. Petroleum Exploration and Production Research Institute, SINOPEC, Beijing 100083, China
  • Received:2020-05-12 Revised:2020-05-26 Online:2020-09-10 Published:2020-09-04

摘要:

四川盆地中国石化探区天然气勘探开发成果显著,自新场气田发现以来,勘探开发领域逐步扩大,储量和产量快速增长。地质理论认识深化与关键技术进步是推动天然气勘探开发大发展的主要动力。中国石化探区天然气资源丰富,有利目标类型多,常规天然气整体探明程度为16%,页岩气勘探尚处于初期阶段,根据HCZ模式预测,中国石化探区天然气(含页岩气)勘探开发仍将快速发展,具备年均新增探明天然气地质储量(1 600~2 000)×108 m3的潜力。围绕页岩气、海相碳酸盐岩天然气、陆相致密砂岩气等领域的高效勘探开发,需要加强深层海相页岩气增产降本的钻完井、压裂技术攻关,以及陆相、海陆过渡相页岩气资源潜力评价和勘探开发适应性技术准备,加强深层超深层礁滩相碳酸盐岩储层、风化壳储层预测和超深井高效钻井、压裂测试技术攻关,加强陆相致密砂岩气地质—测井—地震一体化甜点预测和低成本直井多层压裂技术攻关。

关键词: 四川盆地, 常规天然气, 页岩气, 勘探领域, 技术攻关

Abstract:

Natural gas exploration in SINOPEC exploratory areas in the Sichuan Basin has achieved rapid development. Since the discovery of Xinchang gas field, exploration domain of natural gas has been expanded gradually, with both reserves and production growing rapidly. Deepening of theory of natural gas geology and progress of key technology was major driving forces of great development of natural gas industry. Considering the rich natural gas resources, various types of favorable targets, exploration degree of 16% of conventional natural gas, and the initial stage of shale gas exploration, it’s predicted by HCZ model that the exploration of natural gas including shale gas in SINOPEC exploratory areas in the Sichuan Basin will remain rapid development with proved reserve increasing by (1 600-2 000)×108 m3/a. The development strategy in the future is to vigorously develop shale gas, steadily promote marine conventional natural gas, and continually research of continental tight sandstone gas. Aiming at the efficient exploration of the three resource types, the following tasks need to be strengthened: Prediction of deep and ultra-deep reef-shoal reservoirs, weathered crust reservoirs, and technological breakthrough of efficient drilling and fracturing test of ultra-deep wells; technological breakthrough of geological-logging-seismic integrated sweet spot prediction of tight sandstones and low-cost multi-layer fracturing of vertical wells; technological breakthrough of increasing-yield and reducing-cost drilling, completion and fracturing of deep marine shale gas; resources potential evaluation and adaptive exploration & development technologies preparation of continental and transitional shale gas.

Key words: Sichuan Basin, Conventional natural gas, Shale gas, Exploration domain, Technological breakthroughFoundation item:The Chinese Academy of Engineering Consulting Project(Grant No. 2015-ZD-09).

中图分类号: 

  • TE132.1

图1

马井—什邡地区JP25气层综合评价图"

图2

元坝气田长兴组生物礁储层预测"

图3

中国石化四川盆地探区天然气储量和产量增长趋势"

表1

四川盆地中国石化探区天然气探明程度统计"

地区面积/km22D地震/km3D地震/km2探井/口三维地震密度/(km2/km2钻井密度/(口/km2)
川东北21 57711 9629 290.381900.430.008 8
川西10 57013 0158 8416530.840.061 8
川西南9 692.54 2821 314.36540.140.005 6
川东南31 388.811 6974 9661140.160.003 6

图4

四川盆地中国石化探区天然气储量增长趋势预测图(HCZ模式)"

表2

四川盆地中国石化探区陆相致密砂岩天然气资源量"

区块天然气资源量/(108 m3
侏罗系须家河组合计
川西探区23 547.2529 688.1953 235.44
川东北探区/10 508.3210 508.32
川南探区1 061.29285.331 346.62
总计24 608.5440 481.8465 090.38
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