吉木萨尔页岩油区块防漏堵漏技术

周双君; 朱立鑫; 杨森; 毛俊; 李萧杰; 黄维安

doi:10.11911/syztjs.2021034

吉木萨尔页岩油区块防漏堵漏技术

1.
中国石油集团西部钻探工程有限公司钻井液分公司，新疆克拉玛依 834000
2.
中国石油大学（华东）理学院，山东青岛 266580
3.
西南石油大学石油与天然气工程学院，四川成都 610500
4.
中国石油大学（华东）石油工程学院，山东青岛 266580

基金项目: 国家科技重大专项“致密油气开发环境保护技术集成及关键装备”（编号：2016ZX05040-005）的部分研究内容

详细信息

作者简介:
周双君（1984—），男，湖北荆州人，2006年毕业于长江大学应用化学专业，2009年获长江大学应用化学专业硕士学位，高级工程师，主要从事钻井液与完井液技术研究与应用。E-mail：zhshjxj@cnpc.com.cn

中图分类号: TE28⁺3
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出版历程
- 收稿日期: 2020-08-12
- 修回日期: 2021-03-31
- 网络出版日期: 2021-07-06
- 刊出日期: 2021-08-24

Technology for Preventing and Controlling Circulation Loss in the Jimusar Shale Oil Block

1.
Drilling Fluid Company, CNPC Xibu Drilling Engineering Company Limited, Karamay, Xinjiang, 834000, China
2.
College of Science, China University of Petroleum (East China), Qingdao, Shandong, 266580, China
3.
Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
4.
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, 266580, China

摘要

摘要: 针对吉木萨尔页岩油区块钻井过程中漏失频发的问题，从地层分布、岩性差异与储层发育特性方面分析了漏失机理，发现该页岩油区块的漏失主要集中在侏罗系八道湾组和二叠系梧桐沟组，浅部漏失地层砂砾岩孔隙发育，胶结疏松，深部漏失地层诱导裂缝发育，所发生漏失分别为渗透性漏失和诱导裂缝漏失。基于吉木萨尔页岩油区块的漏失机理，结合该区块处理漏失的经验，制定了堵漏材料与漏失速度的匹配原则及防漏堵漏技术措施，形成了适用于吉木萨尔页岩油区块的防漏堵漏技术。吉木萨尔页岩油区块应用该技术以后，漏失发生率由38.0%降至19.7%，堵漏成功率提高到了75%。这表明，页岩油区块防漏堵漏技术可以解决吉木萨尔页岩油区块漏失频发的问题，可为该区块的开发提供技术支持。
- 页岩油 /
- 井漏 /
- 漏失机理 /
- 防漏 /
- 堵漏 /
- 吉木萨尔
Abstract: To address the problem of frequent circulation loss during the drilling of the Jimusaer shale oil block, an analysis of the relevant mechanism was conducted from the perspectives of stratigraphic distribution, lithological differences, and reservoir development characteristics. The circulation loss in this block was mainly concentrated in the Jurassic Badaowan Formation and the Permian Wutonggou Formation. The pores were developed in the glutenite of the unconsolidated shallow loss formation, while the induced fractures occurred in the deep loss formation. The circulation loss can be classified into the permeable type and the induced fracture type. Depending on circulation loss mechanism and the experience of dealing with it in the Jimusaer shale oil block, the matching principle between plugging materials and the circulation loss rate was formulated, and prevention and control countermeasures were proposed. As a result, the technology to prevent and control circulation loss was developed for the Jimusaer shale oil block. It reduced the incidence of circulation loss from 38.00% to 19.70% and enhanced the success rate of plugging to 75% in the block. This indicates that the proposed technology is effective for tackling the problem of frequent circulation loss in the Jimusaer shale oil block, and can provide technical support for the development of this block.
- shale oil /
- lost circulation /
- lost circulation mechanism /
- antileakage /
- lost circulation control /
- Jimsar

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表 1 吉45井测井井段孔隙度解释结果

Table 1 Interpretation results of porosity in the logging section of Well Ji 45

地层	井段/m	密度/ （kg·L^–1）	孔隙度, %	渗透率/ mD
梧桐沟组	3123.6～3126.0	2.45	11.8	39.1
	3126.8～3128.3	2.49	9.9	38.5
	3135.5～3139.7	2.47	10.6	39.2
	3158.0～3163.4	2.48	10.1	44.1
	3167.3～3170.9	2.51	8.4	37.3
	3175.1～3182.6	2.49	9.4	40.9
芦草沟组	3247.7～3249.5	2.50	6.0	48.1
	3263.4～3266.4	2.44	10.3	77.2
	3267.0～3268.0	2.49	4.5	38.6
	3269.1～3272.1	2.50	6.6	53.2
	3272.7～3273.4	2.45	4.2	34.3
	3277.0～3281.7	2.46	8.3	59.9
	3281.7～3283.6	2.52	5.0	26.4
	3283.6～3285.5	2.46	6.6	51.9
	3289.4～3294.2	2.44	9.0	60.1
	3305.4～3307.6	2.47	7.2	57.3
	3311.3～3313.0	2.46	4.5	33.8
	3313.9～3316.2	2.47	7.2	59.2
	3323.3～3327.3	2.49	7.5	62.4
	3331.3～3333.5	2.51	5.9	46.6
	3340.7～3341.8	2.50	3.3	33.5
井井子沟组	3432.4～3437.1	2.46	8.1	37.9
	3440.9～3443.9	2.49	6.9	41.2
	3451.2～3453.4	2.48	7.6	34.5
	3454.4～3457.8	2.46	8.5	41.6
	3458.8～3463.3	2.45	9.0	40.3

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表 2 堵漏材料与漏失速度的匹配原则

Table 2 Matching principle between plugging materials and the circulation loss rate

漏失速度/ （m³·h^–1）	核桃壳加量，%		棉籽壳/ 果壳加量，%	KZ系列/ TP-2堵漏剂加量，%	蛭石加量，%	纤维FCL 加量，%
漏失速度/ （m³·h^–1）	1～3 mm	3～5 mm	棉籽壳/ 果壳加量，%	KZ系列/ TP-2堵漏剂加量，%	蛭石加量，%	纤维FCL 加量，%
1～5				4～6
5～15	2～4	2～3	1～2	3～4	1	0.2～0.4
15～30	4～5	3～5	2～3	3～4	1	0.3～0.4
＞30	6～8	5～8	3～5	3～4	1	0.4～0.5

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