有机复合交联堵剂的研制及应用
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摘要
本文针对克拉玛依油田低渗透裂缝性油藏调剖堵水存在的技术难题，以部分水解聚丙烯酰胺HPAM为主剂，有机Cr~(3+)离子和有机酚醛为交联剂，CRC为增强剂，筛选出了有机复合交联堵剂的最佳配方。评价了堵剂在七中区佳木河组和八区下乌尔禾组两种油藏条件下的成胶时间、成胶强度、抗盐性、抗温性、时间稳定性、耐压强度、选择注入性、吸水剖面改善率和驱油效率。实验结果表明，有机复合交联堵剂的成胶时间在2-72小时可调可控，抗压强度可达26-61 MPa／m，而且具有很好的长期稳定性。
本文还对有机复合交联堵剂的复合交联机理进行了实验研究。研究结果表明，HPAM羧基与Cr~(3+)离子在地面条件下的一次交联作用有利于减少堵剂在油层的漏失量，HPAM酰胺基与有机酚醛在地层条件下的二次交联作用，能够形成耐温高强度凝胶。
在上述研究的基础上，2001年10月使用有机复合交联堵剂在克拉玛依油田八区下乌尔禾组85079井组和七区佳木河组7511、7515油井进行了矿场应用，截止2002年10月底，累计增油2065吨，取得了显著的增油效果。
In this paper, the best formulation of the organic compound cross-linking agent which takes the partially hydrolyzed polyacrylamide as the main chemical and take the organic Cr3+ and phenolic aldehyde as cross-linker was selected, according to the technical problems of profile modification and water shut-off encountered in low penetrability and fracture-type reservoir in KeLaMaYi oil field. Thus, on the reservoir conditions of the seventh middle area of JiaMuHe and eighth area of XiaWuErHeZu, the qualities of blocking agent such as gelatification time, the gel strength, the salt resistance, the temperature resistance, the stability, the compressive strength, the selection of injection, the improvement ratio of water entry profile and the sweeping efficiency were evaluated. The experimental results indicated that this blocking agent have following advantages: its gelatification time can be controlled and adjusted between 2-72 hours, its compressive strength can reach from 26 MPa/m to 61 MPa/m, and its stability is perfect within a long time.
Furthermore, the experiment research was conducted to study its organic compound crosslink mechanism. The research results indicated that the first cross-linking between the HPAM and Cr3+ in ground condition was propitious to reduce leaking of blocking agent in oil layer, and the second crosslink action between acylamino of HPAM and organic phenolic aldehyde can form the high intensity gel and it can endure high temperature.
Based on these research works, in October 2001 this blocking agent was applied in XiaWuErHe 85079 well pattern and JiaMuHe 7511, 7515 wells in KeLaMaYi oil field. By the end of October 2002, it has increased oil production accumulated to 2065 tons, acquired notable effect.
本文还对有机复合交联堵剂的复合交联机理进行了实验研究。研究结果表明，HPAM羧基与Cr~(3+)离子在地面条件下的一次交联作用有利于减少堵剂在油层的漏失量，HPAM酰胺基与有机酚醛在地层条件下的二次交联作用，能够形成耐温高强度凝胶。
在上述研究的基础上，2001年10月使用有机复合交联堵剂在克拉玛依油田八区下乌尔禾组85079井组和七区佳木河组7511、7515油井进行了矿场应用，截止2002年10月底，累计增油2065吨，取得了显著的增油效果。
In this paper, the best formulation of the organic compound cross-linking agent which takes the partially hydrolyzed polyacrylamide as the main chemical and take the organic Cr3+ and phenolic aldehyde as cross-linker was selected, according to the technical problems of profile modification and water shut-off encountered in low penetrability and fracture-type reservoir in KeLaMaYi oil field. Thus, on the reservoir conditions of the seventh middle area of JiaMuHe and eighth area of XiaWuErHeZu, the qualities of blocking agent such as gelatification time, the gel strength, the salt resistance, the temperature resistance, the stability, the compressive strength, the selection of injection, the improvement ratio of water entry profile and the sweeping efficiency were evaluated. The experimental results indicated that this blocking agent have following advantages: its gelatification time can be controlled and adjusted between 2-72 hours, its compressive strength can reach from 26 MPa/m to 61 MPa/m, and its stability is perfect within a long time.
Furthermore, the experiment research was conducted to study its organic compound crosslink mechanism. The research results indicated that the first cross-linking between the HPAM and Cr3+ in ground condition was propitious to reduce leaking of blocking agent in oil layer, and the second crosslink action between acylamino of HPAM and organic phenolic aldehyde can form the high intensity gel and it can endure high temperature.
Based on these research works, in October 2001 this blocking agent was applied in XiaWuErHe 85079 well pattern and JiaMuHe 7511, 7515 wells in KeLaMaYi oil field. By the end of October 2002, it has increased oil production accumulated to 2065 tons, acquired notable effect.
引文
1. R.S.Seright.SPE.Use of Preformed Gels for Conformance Control in Fractured Systems. SPE. 35351
2. Lockhart SPE.Candidate and Chemical Selection Rulesfor Water Shutoff Polymer Treatments.SPE 54736
3. R.S.Seright.SPE.Gel Propagation Thtough Fractures.SPE 59316
4. A.Omari.SPE.Controlling Gelation Time Microgel Size for Water Shutoff.SPE 59317
5. 18.R.S.Seright.SPE.Rheologyof Gels Used For Conformance Control in Fractures.SPE 59318
6. acylamino/Chromium(Ⅲ) Acetate Water Shutoff Gels.SPE 59319
7. RIPED.CNPC.Selective Water Shutoff Technology Study and Application of W/O Emulsions.SPE 59320
8. M.A. Gruenenfelder. Implementing New Permeability Selective Water Shutoff Polymer Technology in Offshore, Gravel-Packed Wells. SPE 27770
9．白宝君，李宇乡，刘翔鹗．国内外化学调剖堵水技术综述，断块油气田，1998，5(1)：1-4
10．纪朝风，葛红江．调剖堵水材料研究现状与发展趋势．石油钻采工艺，2002，24(1)：54-58
11．李宇乡，唐孝芬，刘双成．我国油田化学调剖堵水剂开发和应用现状．油田化学，1995，12(1)：88-94
12．陈铁龙，蒲万芬等．预成胶的室内研究及裂缝性油藏的应用．油田稳油控水论文集，2001年：240-246
13．韩力，徐学成，李斌．火烧山油田H_2、H_3层区域控水稳油综合治理
技术研究．油田稳油控水论文集，2001年：118-132
14．马自俊等．国外提高采收率化学剂发展状况．油田化学，1996，13(4)：381-384
15．翁蕊，韦莉．低浓度HPAM／Cr~(3+)凝胶成胶行为影响因素的研究．油田化学，1999，16(1)：53-56
16．黎刚等．水溶性酚醛树脂作为水基聚合物凝胶交联剂的研究．油田化学，2000，17(4)：310-313
17．赵福麟等．调剖堵水的潜力、限度和发展趋势．石油大学学报(自然科学版)，1999，23(1)：49-54
18．李朝霞．国外油井控水技术综述．国外油田工程，1997，6：29-32
19．刘敏，李宇乡．非水解聚丙烯酰胺／乙酸铬凝胶堵剂研究．油田化学，1998，15(3)：253-256
20．马广彦，徐振峰．间苯二酚在聚合物凝胶堵水技术中的应用．油田化学，1997，14(3)：286-289
21．张小平等．高渗透、大孔道、裂缝性地层堵水剂的研制与应用．断块油气田，2001，8(4)：65-68
22．巨登峰，张克勇，张双艳．华北油田裂缝性油藏的堵水实践．断块油气田，2001，8(6)：39-42
23．何长等．大孔道的表现特征及调剖对策．石油钻采工艺，2000，5(22)：63-66
24．张小平等．SD选堵剂的应用研究．油田化学，2000，3(23)：81-84
25．张学峰等．砂岩油藏高含水期封堵大孔道工艺技术研究及应用．石油钻采工艺，1999，5(21)：87-90
2. Lockhart SPE.Candidate and Chemical Selection Rulesfor Water Shutoff Polymer Treatments.SPE 54736
3. R.S.Seright.SPE.Gel Propagation Thtough Fractures.SPE 59316
4. A.Omari.SPE.Controlling Gelation Time Microgel Size for Water Shutoff.SPE 59317
5. 18.R.S.Seright.SPE.Rheologyof Gels Used For Conformance Control in Fractures.SPE 59318
6. acylamino/Chromium(Ⅲ) Acetate Water Shutoff Gels.SPE 59319
7. RIPED.CNPC.Selective Water Shutoff Technology Study and Application of W/O Emulsions.SPE 59320
8. M.A. Gruenenfelder. Implementing New Permeability Selective Water Shutoff Polymer Technology in Offshore, Gravel-Packed Wells. SPE 27770
9．白宝君，李宇乡，刘翔鹗．国内外化学调剖堵水技术综述，断块油气田，1998，5(1)：1-4
10．纪朝风，葛红江．调剖堵水材料研究现状与发展趋势．石油钻采工艺，2002，24(1)：54-58
11．李宇乡，唐孝芬，刘双成．我国油田化学调剖堵水剂开发和应用现状．油田化学，1995，12(1)：88-94
12．陈铁龙，蒲万芬等．预成胶的室内研究及裂缝性油藏的应用．油田稳油控水论文集，2001年：240-246
13．韩力，徐学成，李斌．火烧山油田H_2、H_3层区域控水稳油综合治理
技术研究．油田稳油控水论文集，2001年：118-132
14．马自俊等．国外提高采收率化学剂发展状况．油田化学，1996，13(4)：381-384
15．翁蕊，韦莉．低浓度HPAM／Cr~(3+)凝胶成胶行为影响因素的研究．油田化学，1999，16(1)：53-56
16．黎刚等．水溶性酚醛树脂作为水基聚合物凝胶交联剂的研究．油田化学，2000，17(4)：310-313
17．赵福麟等．调剖堵水的潜力、限度和发展趋势．石油大学学报(自然科学版)，1999，23(1)：49-54
18．李朝霞．国外油井控水技术综述．国外油田工程，1997，6：29-32
19．刘敏，李宇乡．非水解聚丙烯酰胺／乙酸铬凝胶堵剂研究．油田化学，1998，15(3)：253-256
20．马广彦，徐振峰．间苯二酚在聚合物凝胶堵水技术中的应用．油田化学，1997，14(3)：286-289
21．张小平等．高渗透、大孔道、裂缝性地层堵水剂的研制与应用．断块油气田，2001，8(4)：65-68
22．巨登峰，张克勇，张双艳．华北油田裂缝性油藏的堵水实践．断块油气田，2001，8(6)：39-42
23．何长等．大孔道的表现特征及调剖对策．石油钻采工艺，2000，5(22)：63-66
24．张小平等．SD选堵剂的应用研究．油田化学，2000，3(23)：81-84
25．张学峰等．砂岩油藏高含水期封堵大孔道工艺技术研究及应用．石油钻采工艺，1999，5(21)：87-90
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