金湖凹陷天96断块阜二段储层裂缝多参数定量预测

周巨标; 石先达; 丁玉盛; 阚延坤; 施新月

金湖凹陷天96断块阜二段储层裂缝多参数定量预测

中国石油化工股份有限公司江苏油田分公司安徽采油厂, 安徽天长 239300

基金项目:

国家科技重大专项“大型油气田及煤层气开发” 2011ZX05042-001

详细信息

作者简介:
周巨标(1967-), 男, 高级工程师, 主要从事滚动开发研究工作。E-mail:zhoujb.jsyt@sinopec.com

中图分类号: TE122.2
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- 文章访问数: 280
- HTML全文浏览量: 88
- PDF下载量: 15
- 被引次数: 0
出版历程
- 收稿日期: 2014-12-04
- 刊出日期: 2015-09-01

THE MULTI-PARAMETER QUANTITATIVE PREDICTION OF RESERVOIR FRACTURE OF FU-2 MEMBER IN TIAN 96 FAULT BLOCK OF JINHU SAG

Anhui Production Plant of Jiangsu Oilfield Company, SINOPEC, Tianchang 239300, Anhui, China

摘要

摘要: 基于应变能、表面能理论, 采用格里菲斯岩石破裂准则, 建立了金湖凹陷天96断块造缝期古地应力、现今地应力与裂缝参数之间的关系; 基于构造分析确定了造缝时期古地应力的类型和方向, 用声速法和水力压裂法确定了现今地应力的方向和大小, 将古今地应力场的数值模拟结果导入裂缝参数计算模型中, 模拟计算了天96断块阜二段裂缝的密度、开度、孔渗参数, 并结合古地应力场分析以及岩心裂缝统计数据对裂缝预测结果进行验证; 最后, 综合分析了影响天96断块裂缝发育的因素。
- 天96断块 /
- 地应力 /
- 储层裂缝 /
- 影响因素 /
- 数值模拟
Abstract: Based on the theory of strain energy and surface energy, the relationship between the fracture parameters and the ancient and present earth stresses at the fracture forming period in Tian 96 fault block of Jinhu sag was established by using Griffith rock-cracking principle. The type and direction of the ancient earth stress were determined through the structure analysis, and the direction and strength of the present earth stress were calculated by using the method of sound velocity and hydraulic fracturing. The numerical simulation results of the ancient and modern stress field were substituted into the calculating model of fracture parameter to calculate the density, opening, porosity and permeability of the fractures in Fu-2 member in Tian 96 fault block. And the fracture prediction results were verified using the ancient stress field analysis and core statistics. Eventually the main factors that affect fractures development in Tian 96 fault block were analyzed comprehensively.
- Tian 96 fault block /
- earth stress /
- reservoir fracture /
- influencing factors /
- numerical simulation

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图 1 天96断块构造位置

Figure 1. Structural location of Tian 96 fault block

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图 2 天96断块裂缝走向玫瑰花图

Figure 2. The rose diagram of fracture strike in Tian 96 fault block

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图 3 天96断块阜二段顶面构造图

Figure 3. Top structure of Fu-2 member in Tian 96 fault block

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图 4 现今裂缝开度

Figure 4. Current fracture aperture

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图 5 阜二段裂缝线密度

Figure 5. Line density of fractures in Fu-2 Member

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图 6 现今裂缝的孔隙度

Figure 6. Current fracture porosity

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图 7 现今裂缝东西向的渗透率

Figure 7. Current W-E permeability of fracture in Fu-2 Member

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图 8 现今裂缝垂向渗透率

Figure 8. Current vertical fracture permeability of Fu-2 Member

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图 9 现今裂缝南北向渗透率

Figure 9. Current fracture N-S permeability

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图 10 断层走向与水平最小主应力方向的关系

Figure 10. The relationship between fault strike and the direction of minimum horizontal principal stress

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表 1 天96及天33断块岩心裂缝发育规模统计

Table 1. Statistics of fracture development in cores of Tian 96 and Tian 33 fault block

井号	裂缝开度/mm	线密度/(条·m^-1)
乔1	0.211	1.25
吴101X1		0.40
天X33-1	0.127	0.75
天X33-2(1)	0.203	0.55
天X33-2(2)	0.336
天X33-3	0.245	1.55

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表 2 天96断块阜宁期应力场模拟力学参数

Table 2. Mechanical parameters of stress field simulation of Tian 96 fault block in Funing Period

地层	泊松比	弹性模量/GPa	密度/(g·cm^-3)
砂岩层	0.15	5.6	2.21
断层带	0.20	5.0	2.20
泥岩层	0.23	4.5	2.10
围岩	0.15	5.5	2.22

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表 3 岩心与数值模拟裂缝参数对比

Table 3. Comparison of fracture parameters in core testing and numerical simulation

断块	井号	与断层距离/ m	埋深/m	开度/mm		线密度/(条·m^-1)		孔隙度/%
断块	井号	与断层距离/ m	埋深/m	岩心实测	数值模拟	岩心实测	数值模拟	岩心实测	数值模拟
天33	天X33-1	300	2486	0.127	0.035	0.75	3.6	0.0095	0.0126
	天X33-2	100	2402	0.203	0.035	0.55	3.8	0.0112	0.0133
	天X33-2	50	2693	0.336	0.039	0.55	4.1	0.0185	0.0160
	天X33-3	250	2235	0.245	0.040	1.55	3.8	0.0380	0.0152
天96	乔1	10	2146	0.211	0.043	1.25	3.9	0.0264	0.0168
天96	吴101X1	550	1825		0.038	0.40	3.3	-	0.0125

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