克拉苏冲断带白垩系储层成岩作用及其对储层质量的影响

潘荣; 朱筱敏; 刘芬; 李勇; 张剑锋

克拉苏冲断带白垩系储层成岩作用及其对储层质量的影响

1.
中国石油大学(北京)地球科学学院北京 102249;
2.
中国石油天然气股份有限公司塔里木油田分公司新疆库尔勒 841000

基金项目: 国家973计划项目（编号：2011CB201104）、国家自然科学基金（批准号：41272133）与青年科学基金项目（批准号：41202107）联合资助

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Cretaceous Diagenesis and Its Control on Reservoir in Kelasu Structure Zone, Kuqa Depression

1.
College of Geosciences, China University of Petroleum (Beijing), Beijing 102249;
2.
PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000

摘要

摘要: 利用大量岩石薄片、铸体薄片、测录井资料及岩芯观察等资料，对库车坳陷克拉苏冲断带白垩系巴什基奇克组储集层的岩石组分、成岩作用及孔隙类型特征等进行了系统研究。其岩石学特征为：成分成熟度低，分选中—好，磨圆次棱角状—次圆状，结构成熟度中等—偏低。储集空间为次生孔隙及原生孔隙。储层经历了压实、胶结、溶解、破裂等成岩作用，主要处于中成岩A2-B期。压实作用以机械压实为主，胶结作用主要为碳酸盐胶结；溶蚀作用导致碳酸盐胶结物、长石颗粒和少量岩屑溶解、破裂作用产生裂缝。在克拉苏断裂的上、下盘地层中，压实作用及胶结作用是孔隙减少的主要原因。断裂带上盘埋深较浅，抬升遭受表生溶蚀作用使得溶蚀孔隙非常发育；断裂带下盘埋深较深，压实和胶结作用使得储层致密化，后期构造挤压破裂作用形成的裂缝及溶蚀扩大缝有效地改善了深部储层物性。
- 库车坳陷 /
- 白垩系 /
- 砂岩储层 /
- 成岩作用 /
- 储层控制因素
Abstract: Based on a large number of thin sections, casting thin sections, logging data and core observation, the characteristics of rock components, diagenesis and pore types of Cretaceous Bashijiqike Formation in Kelasu structure zone are systematically studied. The results indicate that the petrological characteristics of sandstone reservoirs are low compositional maturity, middle-well sorted, low-middle textural maturity, sub-angular and sub-round. The effective reservoir spaces are secondary pore and primary pore. The reservoir under went compaction, cementation, dissolution and fissure. The reservoir has mainly entered stage A2-B of the middle diagenetic phase. The cementation is mainly of carbonate character. The mechanical compaction and cementation are the major reasons for reducing storage space. The pore space was affected by the dissolution of calcite cement, feldspar and fragments. Tectonic fracturing gave rise to new reservoir spaces. On the hanging wall of Kelasu fault, the burial depth of strata is shallower, and the storage space is characterized by secondary pores which have formed from the aerial dissolution by the uplifted strata. However, on the foot wall of the Kelasu fault, the burial depth of strata is deeper, and the reservoirs were densified because of compaction and cementation. The solution and fissure are important for improving the quality of the reservoir.
- Kuqa depression /
- Cretaceous /
- sandstone reservoir /
- diagenesis /
- controlling factors of reservoir quality

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参考文献(25)

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克拉苏冲断带白垩系储层成岩作用及其对储层质量的影响

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Cretaceous Diagenesis and Its Control on Reservoir in Kelasu Structure Zone, Kuqa Depression

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克拉苏冲断带白垩系储层成岩作用及其对储层质量的影响

1. 中国石油大学(北京)地球科学学院北京 102249;

2. 中国石油天然气股份有限公司塔里木油田分公司新疆库尔勒 841000

English Abstract

Cretaceous Diagenesis and Its Control on Reservoir in Kelasu Structure Zone, Kuqa Depression

1. College of Geosciences, China University of Petroleum (Beijing), Beijing 102249;

2. PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000

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克拉苏冲断带白垩系储层成岩作用及其对储层质量的影响

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Cretaceous Diagenesis and Its Control on Reservoir in Kelasu Structure Zone, Kuqa Depression

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出版历程

目录

克拉苏冲断带白垩系储层成岩作用及其对储层质量的影响

1. 中国石油大学(北京)地球科学学院 北京 102249; 2. 中国石油天然气股份有限公司塔里木油田分公司 新疆库尔勒 841000

English Abstract

Cretaceous Diagenesis and Its Control on Reservoir in Kelasu Structure Zone, Kuqa Depression

1. College of Geosciences, China University of Petroleum (Beijing), Beijing 102249; 2. PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000

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联系我们

1. 中国石油大学(北京)地球科学学院北京 102249;

2. 中国石油天然气股份有限公司塔里木油田分公司新疆库尔勒 841000

1. College of Geosciences, China University of Petroleum (Beijing), Beijing 102249;

2. PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000