渝东南地区茅口组气藏大石1HF井酸压工艺技术研究

doi:10.13809/j.cnki.cn32-1825/te.2020.05.012

Abstract

Abstract:

Significant advances has been made in the exploration and development of deep gas reservoirs in the southeastern Chongqing, especially the deep shale gas. While the shallow gas exploration is on the contrary, especially the shallow fracture-matrix limestone gas reservoir, Maokou Formation, with low porosity, low permeability, low fracture development, low reservoir temperature, low pressure coefficient, and mediocre fracture development. During the acid fracturing process, as the gel is hard to break by acid and the flow back is difficult, then the effect is poor, and it is difficult to make breakthrough. Taking the characteristics of carbonate reservoir, Maokou Formation in well-Dashi-1HF, as the example, the difficulties in reservoir acid fracturing have been analyzed, the self-degradation gelling acid has been synthesized, the mechanism of degradation has been introduced, and the optimization of the acid-liquid system has been carried out. The horizontal well acid fracturing pipe string has been optimized to form acid fracturing technology of self-degradation gelling acid and multilevel packer, at the same time, the segmented acid fracturing parameters have been optimized. 4 stages acid fracturing of well-Dashi-1HF has been completed, and the total acid dosage is 2 129.2 m³. The test gas production after acid fracturing is 22.6×10⁴ m³/d. The results show that this new technology has a good effect in the shallow limestone of southeastern Chongqing, and provides useful reference for the acid fracturing of similar layers in the future.

Key words: shallow gas in southeastern Chongqing, limestone, horizontal well, self-degradation gelling acid, staged acid fracturing

CLC Number:

TE357.2

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.

Figures/Tables 15

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References 21

[1]	郑志红, 李登华, 白森舒, 等. 四川盆地天然气资源潜力[J]. 中国石油勘探, 2017,22(3):12-20.
	ZHENG Z H, LI D H, BAI S S, et al. Resource potentials of natural gas in Sichuan Basin[J]. China Petroleum Exploration, 2017,22(3):12-20.
[2]	朱华, 杨光, 苑保国, 等. 四川盆地常规天然气地质条件、资源潜力及勘探方向[J]. 天然气地球科学, 2018,29(10):1475-1485.
	ZHU H, YANG G, YUAN B G, et al. Geological conditions resource potential and exploration direction of conventional gas in Sichuan Basin[J]. Natural Gas Geoscience, 2018,29(10):1475-1485.
[3]	洪海涛, 田兴旺, 孙奕婷, 等. 四川盆地海相碳酸盐岩天然气富集规律[J]. 中国地质, 2020,47(1):99-110.
	HONG H T, TIAN X W, SUN Y T, et al. Hydrocarbon enrichment regularity of marine carbonate in Sichuan Basin[J]. Geology in China, 2020,47(1):99-110.
[4]	徐姣, 孙庆莉, 段杰, 等. 四川盆地东部涪陵—巴南地区茅口组储层特征及预测[J]. 天然气勘探与开发, 2019,42(3):86-93.
	XU J, SUN Q L, DUAN J, et al. Predicting reservoir characteristics of Maokou Formation, Fuling-Ba'nan area, eastern Sichuan Basin[J]. Natural Gas Exploration and Development, 2019,42(3):86-93.
[5]	张倩, 李年银, 李长燕, 等. 中国海相碳酸盐岩储层酸化压裂改造技术现状及发展趋势[J]. 特种油气藏, 2020,27(2):1-5.
	ZHANG Q, LI N Y, LI C Y, et al. Overview and trend of acid-fracturing technology for marine carbonate reservoirs in China[J]. Special Oil & Gas Reservoirs, 2020,27(2):1-5.
[6]	JING T, SHANG Q S, WEN G D , et al. Research progress and prospect of acidizing process and acid fracturing technology[J]. Journal of Petroleum and Mining Engineering, 2019,2(1)
[7]	张以明, 才博, 何春明, 等. 超高温超深非均质碳酸盐岩储层地质工程一体化体积改造技术[J]. 石油学报, 2018,39(1):92-100.
	ZHANG Y M, CAI B, HE C M, et al. Volume fracturing technology based on geo-engineering integration forultra-high temperature and ultra-deep heterogeneous carbonate reservoir[J]. Acta Petrolei Sinica, 2018,39(1):92-100.
[8]	熊春明, 石阳, 周福建, 等. 深层油气藏暂堵转向高效改造增产技术及应用[J]. 石油勘探与开发, 2018,45(5):888-893.
	XIONG C M, SHI Y, ZHOU F J, et al. High efficiency reservoir stimulation based on temporary plugging and diverting for deep reservoirs[J]. Petroleum Exploration and Development, 2018,45(5):888-893.
[9]	焦方正. 塔里木盆地深层碳酸盐岩缝洞型油藏体积开发实践与认识[J]. 石油勘探与开发, 2019,46(3):552-558.
	JIAO F Z. Practice and knowledge of volumetric development of deep fractured-vuggy carbonate reservoirs in TarimBasin, NW China[J]. Petroleum Exploration and Development, 2019,46(3):552-558.
[10]	李松, 马辉运, 张华, 等. 四川盆地震旦系气藏大斜度井水平井酸压技术[J]. 西南石油大学学报(自然科学版), 2018,40(3):146-155.
	LI S, MA H Y, ZHANG H, et al. Study on the acid fracturing technology for high-inclination wells and horizontal wellsof the Sinian system gas reservoir in the Sichuan Basin[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2018,40(3):146-155.
[11]	赵荣华, 刘文峥, 邹建敏, 等. 复合暂堵转向酸化压裂技术在塔河油田的应用[J]. 特种油气藏, 2019,26(6):146-150.
	ZHAO R H, LIU W Z, ZOU J M, et al. Application of compound temporary plugging and steering acidizingfracturing technology in Tahe Oilfeld[J]. Special Oil & GasReservoirs, 2019,26(6):146-150.
[12]	李耕. 胶凝酸稠化剂在方解石中的滞留伤害研究[D]. 成都:西南石油大学, 2017.
	LI G. A study on retention of gelled acid thickener in calcite[D]. Chengdu: Southwest Petroleum University, 2017.
[13]	陈奎, 张汝生, 贺甲元. 离子度对丙烯酰胺(AM)和甲基丙烯酰氧乙基三甲基氯化铵(DMC)共聚物破胶及酸降解的影响研究[J]. 油田化学, 2017,34(2):235-240.
	CHEN K, ZHANG R S, HE J Y, et al. Study on the influence of ionic degree to gel breaking and acid degradation of P(DMC-AM)[J]. Oilfield Chemistry, 2017,34(2):235-240.
[14]	张冰. 酸化中酸岩反应潜在的伤害研究[D]. 大庆:东北石油大学, 2017.
	ZHANG B. The research on the potential damage of the acid-rock reaction in acidification[D]. Daqing: Northeast Petroleum University, 2017.
[15]	张朝举. 川东北海相碳酸盐岩气藏酸化压裂技术及应用研究[D]. 成都:西南石油大学, 2017.
	ZHANG C J. The technology and application of marine carbonate gas reservoir acid fracturing in northeast Sichuan[D]. Chengdu: Southwest Petroleum University, 2017.
[16]	侯帆, 许艳艳, 张艾, 等. 超深高温碳酸盐岩自生酸深穿透酸压工艺研究与应用[J]. 钻采工艺, 2018,41(1):35-37.
	HOU F, XU Y Y, ZANG A, et al. Research and application of deep penetration acid pressing technology for autogenic acid in ultra deep and high temperature carbonate rocks[J]. Drilling & Production Technology, 2018,41(1):35-37.
[17]	杜勇. 碳酸盐岩油藏定点射流深度均衡酸压工艺研究及应用[J]. 钻采工艺, 2018,41(3):48-51.
	DU Y. Study on fixed-point jet depth-balanced acid fracturing technology and application in carbonate reservoirs[J]. Dring & Production Technology, 2018,41(3):48-51.
[18]	王明星, 吴亚红, 孙海洋, 等. 酸液对酸蚀裂缝导流能力影响的研究[J]. 特种油气藏, 2019,26(5):153-158.
	WANG M X, WU Y H, SUN H Y, et al. Influence of acid on the conductivity of acid corrosion fracture[J]. Special Oil &Gas Reservoirs, 2019,26(5):153-158.
[19]	刘壮, 郭建春, 马辉运, 等. 提升高温气井酸压有效缝长方法——以川西地区栖霞组为例[J]. 天然气地球科学, 2019,30(12):1694-1700.
	LIU Z, GUO J C, MA H Y, et al. Simulation study of the approach to enhance acid penetration distance in high temperature gas well: Case study of Qixia Formation, western Sichuan Basin[J]. Natural Gas Geoscience, 2019,30(12):1694-1700.
[20]	蒋廷学, 周珺, 贾文峰, 等. 顺北油气田超深碳酸盐岩储层深穿透酸压技术[J]. 石油钻探技术, 2019,47(3):140-147.
	JIANG T X, ZHOU J, JIA W F, et al. Deep penetration acid-fracturing technology for ultra-deep carbonate oil & gas reservoirs in the Shunbei Oil and Gas Field[J]. Petroleum Drilling Techniques, 2019,47(3):140-147.
[21]	周林波, 刘红磊, 解皓楠, 等. 超深碳酸盐岩水平井水力喷射定点深度酸化压裂技术[J]. 特种油气藏, 2019,26(3):158-162.
	ZHOU L B, LIU H L, XIE H N, et al. Fixed-point acid fracturing technology in the ultra-deep carbonate horizontal well[J]. Special Oil & Gas Reservoirs, 2019,26(3):158-162.

稠化剂代号	加量/（g·L^-1）	酸溶时间/min	黏度/（mPa?s）
BFC-13	0.3	30	34
	0.4	35	43
	0.5	46	50
	0.6	58	56
	0.7	72	61
CX-208	0.3	40	23
	0.4	60	31
	0.5	80	37
YLG-1（乳液）	0.7	20	21
	1.0	25	26
	1.3	30	31

缓蚀剂	加量/（g·L^-1）	腐蚀速度/[g?（m²?h）^-1]	是否发生点蚀
BFC-17	1	0.35	否
BFC-17	2	0.18	否
YLH-1	1	0.40	否
YLH-1	2	0.20	否
YHS-2	1	1.00	否
YHS-2	2	0.80	否
SD-820	1	0.90	否
SD-820	2	0.70	否

铁离子稳定剂	加量/（g?L^-1）	稳定Fe³⁺能力/（mg?mL^-1）
TW-15	10	136
HAC	10	86
YLF-1	10	130
FCA	10	85

名称	加量/（g·L^-1）	表面张力/（mN?m^-1）
BZP-03	0.3	26.5
	0.4	23.2
	0.5	22.1
AM-C	0.3	27.9
	0.4	25.0
	0.5	23.1
CF-5A	0.3	27.8
	0.4	23.3
	0.5	22.6

温度/℃	流态指数	稠度系数/（mPa?sⁿ）	黏度/（mPa·s）
温度/℃	流态指数	稠度系数/（mPa?sⁿ）	40 s^-1	100 s^-1	170 s^-1
25	0.460	0.009 51	82.5	58.1	48.0
50	0.459	0.007 62	68.9	50.5	36.0
60	0.473	0.005 21	36.8	22.3	17.6
75	0.560	0.002 76	26.9	17.2	14.8

Acid fracturing technology of Maokou Formation in well-Dashi-1HF, southeastern Chongqing

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温度/ ℃	酸浓度/ （mol?L^-1）	岩心直径/ cm	摩尔浓度/ （mol?L^-1）	反应时间/ s	酸液体积/ cm³	反应速度/ [mol?（s?cm²）^-1]	氢离子传质系数/ （cm²?s^-1）
50	5.625 4	3.815	0.069 8	180	500.1	3.176 1×10^-5	6.50×10^-6
	4.517 3	3.812	0.067 5	180	500.1	2.457 9×10^-5	7.13×10^-6
	3.695 1	3.816	0.036 9	180	500.3	1.949 0×10^-5	5.64×10^-6
	2.483 7	3.810	0.035 1	180	500.0	1.230 7×10^-5	3.15×10^-6

性能参数	参数值
酸液黏度（25 ℃）/（mPa·s）	≥25
酸液密度/（g·cm^-3）	1.09~1.11
滤失系数/（10^-4 m·min^-0.5）	3.08
缓速率/%	≥85.0
残酸表面张力/（mN·m^-1）	≤30
残酸界面张力/（mN·m^-1）	≤5
腐蚀速度（45 ℃）/[g·（m²·h）^-1]	≤3.0
铁离子稳定能力/（mg·L^-1）	≥1 600
配伍性	无絮凝、不分层、无沉淀

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岩心号	伤害前渗透率K₁/10^-3 μm²	伤害后渗透率K₂/10^-3 μm²	伤害率/ %	平均伤害率/ %
1	0.135	0.105	22.22	21.55
2	0.091	0.072	20.88