多级交替注入酸压工艺优化研究——以磨溪龙女寺构造龙王庙组储层改造为例

Abstract

Abstract:

In order to improve the accuracy of the acid fracturing by the multistage alternative injection in Longwangmiao Formation of Moxi-Longnvsi area, we studied the conservation rate of the conductivity of the acid corrosion fractures and the fracture surface morphology influence of different injection rounds, fluid groups and injection rate by the experiment and the numerical scanning. The results showed that the 3rd injection round obtained higher conservation rate of the conductivity of the acid etched fractures, and formed the acid corrosion groove through rock plate. With the increasing of the injection round, the increment of the conservation rate of the conductivity decreased gradually. With the same closing pressure and main acid, little different existed in the 3rd injection round when it took the gel and the authigenic acid as the preflush. With the increasing of the injection rate, the conservation rate of the conductivity of the acid etched fracture was more ideal. The optimized technology has been used in Longwangmiao Formation of Moxi-Longnvsi area. The acid-fracturing curves and fitting data indicate that the technology can realize the engineering purpose. It also provides an effective technical mean for the transformation of the low permeability reservoir.

Key words: multistage alternating injection, acid fracturing, conductivity of the acid corrosion fracture, rock beam scanning, technology optimizatio

CLC Number:

TE357

Ye Jiexiao,Li Li,Han Huifen,Zhang Siqi,Xue Heng,Zhang Zhicheng,He Tingting. Optimization research of multistage alternating acid fracturing: A case study of reservoir reconstruction for Longwangmiao Formation in Moxi-Longnvsi area[J].Reservoir Evaluation and Development, 2018, 8(3): 46-50.

Figures/Tables 8

Fig. 1

Fig. 2

Fig. 3

Table 1

Fig. 4

Fig. 5

Table 2

Fig. 6

References 15

[1]	邹才能, 杜金虎, 徐春春 , 等. 四川盆地震旦系—寒武系特大型气田形成分布、资源潜力及勘探发现[J]. 石油勘探与开发, 2014,41(3):278-293. doi: 10.11698/PED.2014.03.03
[2]	胥云 . 低渗透复杂岩性油藏酸压技术研究与应用[D]. 成都:西南石油大学, 2005.
[3]	胡刚 . 胶凝酸闭合酸压工艺模拟研究[D]. 成都:西南石油大学, 2015.
[4]	徐兵威, 何青, 王德安 , 等. 大牛地气田多级注入酸压工艺优化研究与应用[J]. 石油与天然气化工, 2013,42(3):283-286. doi: 10.3969/j.issn.1007-3426.2013.03.017
[5]	马淑芬 . 多级交替注入闭合酸压设计模拟与应用[D]. 成都:西南石油大学, 2012.
[6]	王栋, 徐心茹, 杨敬一 , 等. 普光气田多级交替注入闭合酸压技术及其应用[J]. 油气地质与采收率, 2012,19(6):108-110.
[7]	王静波, 赵立强, 方泽本 , 等. 多级交替注入酸压优化新方法研究[J]. 天然气勘探与开发, 2011,34(3):41-43. doi: 10.3969/j.issn.1673-3177.2011.03.012
[8]	王玉芳, 杜建军, 牛新年 . 碳酸盐岩酸压裂缝导流能力随缝长变化规律研究[J]. 地质力学学报, 2015,21(4):546-553. doi: 10.3969/j.issn.1006-6616.2015.04.010
[9]	党伟, 李军, 贾红战 , 等. 多级注入酸压技术在南堡油田的应用[J]. 钻井液与完井液, 2012,29(5):74-76.
[10]	赵贤正, 才博, 金凤鸣 , 等. 富油凹陷二次勘探复杂储层油气藏改造模式——以冀中坳陷、二连盆地为例[J]. 石油钻采工艺, 2016,38(6):823-829.
[11]	车明光, 袁学芳, 范润强 , 等. 酸蚀裂缝导流能力实验与酸压工艺技术优化[J]. 特种油气藏, 2014,21(3):120-123. doi: 10.3969/j.issn.1006-6535.2014.03.029
[12]	李小刚, 杨兆中, 张俊良 , 等. 酸压裂缝导流能力研究回顾与展望[J]. 新疆石油地质, 2012,33(2):241-243.
[13]	蒋卫东, 汪绪刚, 蒋建方 , 等. 酸蚀裂缝导流能力模拟实验研究[J]. 钻采工艺, 1998,21(6):33-36.
[14]	白翔 . 基于刻蚀形态数字化表征的酸蚀裂缝导流能力研究[D]. 成都:西南石油大学, 2015.
[15]	庄园 . 基于数字化表征的酸蚀裂缝导流能力研究[D]. 成都:西南石油大学, 2014.

不同液体组合	酸导前后变化	R_y（轮廓最大高度）/mm	R_c（轮廓微观不平整的平均高度）/mm	R_a（轮廓算术平均偏差）/mm	L₀（轮廓展开长度）/mm	l₀（轮廓长度比）
冻胶前置液+胶凝酸三级交替注入	酸导前	0.137	0.024	0.025	149.335	1
	酸导后	1.738	0.317	0.195	210.576	1.006
	变化值	1.601	0.292	0.17	61.241	0.006
自生酸前置液+胶凝酸三级交替注入	酸导前	0.05	0.032	0.031	146.906	1
	酸导后	0.31	0.075	0.055	207.915	1.001
	变化值	0.26	0.043	0.024	61.009	0.001

不同注入速度	酸导前后变化	R_y（轮廓最大高度）/mm	R_c（轮廓微观不平整的平均高度）/mm	R_a（轮廓算术平均偏差）/mm	L₀（轮廓展开长度）/mm	l₀（轮廓长度比）
40 mL/min自生酸前置液+胶凝酸三级交替注入	酸导前	0.107 1	0.011	0.017 6	149.319 3	1.000 1
	酸导后	0.551 9	0.061 6	0.053 2	211.948 3	1.001 8
	变化值	0.444 8	0.050 6	0.035 6	62.629 1	0.001 7
150 mL/min自生酸前置液+胶凝酸三级交替注入	酸导前	0.066	0.01	0.014 9	148.804 7	1
	酸导后	2.577 8	0.838 6	0.243 3	221.354 6	1.046 3
	变化值	2.511 8	0.828 6	0.228 4	72.549 9	0.046 3

Optimization research of multistage alternating acid fracturing: A case study of reservoir reconstruction for Longwangmiao Formation in Moxi-Longnvsi area

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 8

References 15

Related Articles 7

Metrics

Comments

Recommended 10

[1]	XIA Haibang,BAO Kai,WANG Rui,XIONG Wei. Gelling acid fracturing experiment in Maokou marl formation of Nanchuan area [J]. Reservoir Evaluation and Development, 2021, 11(2): 235-240.
[2]	CHEN Xiang,ZHAO Liqiang,LI Xiaofan,HU Binghua,HU Zhongtai,YAO Fengsheng. Volumetric acid fracturing technology of offshore tight sandstone gas reservoirs [J]. Reservoir Evaluation and Development, 2020, 10(5): 120-126.
[3]	LEI Lin,ZHANG Longsheng,XIONG Wei. Acid fracturing technology of Maokou Formation in well-Dashi-1HF, southeastern Chongqing [J]. Reservoir Evaluation and Development, 2020, 10(5): 84-90.
[4]	GENG Yudi,ZHOU Linbo,WANG Yang,LI Chunyue. High conductivity acid fracturing technology in ultra-deep carbonate reservoir [J]. Reservoir Evaluation and Development, 2019, 9(6): 56-60.
[5]	Zhifeng LUO,Lin WU,Liqiang ZHAO,Nanlin ZHANG,long CHENG,Dengfeng REN. Design method and application of temporary plugging by fiber and diverting acid fracturing [J]. Reservoir Evaluation and Development, 2019, 9(6): 65-71.
[6]	Zhao Liqiang,Miao Weijie,Luo Zhifeng,Gong Yunlei,Wang Peng,Li Qiyang. Simulation study on conductivity of closed acid cracks [J]. Reservoir Evaluation and Development, 2019, 9(2): 25-32.
[7]	Luo Zhifeng,Yu Yang,Zhao Liqiang,Li Xiaogang,Zhao Xingdong. Multifactorial experiment of acid's fingering phenomenon in the multi-stage alternating injection of acid fracturing [J]. Reservoir Evaluation and Development, 2018, 8(4): 36-41.