Development and Application of Environmental Friendly High Temperature Resistant Biomass Synthetic Resin Filtrate Reducer in Yuanba Area
-
摘要: 针对元坝地区海相碳酸盐岩地层井下常遭遇酸根及硫化氢污染,造成钻井液黏度和滤失量上升、抗温性下降,流型难以控制,给现场维护带来极大挑战。提出采用生物-化学的方法对木质素进行改性,研制出一种团状多支结构的环保型生物质合成树脂降滤失剂LDR。性能评价结果显示,该产品抗温达200 ℃,抗盐25%,抗钙3000 mg/L,表现出较强的耐温抗盐的性能,并以此为核心抗高温材料,通过引入钾、钙、钠等离子,构建出抗高温复合盐水钻井液体系。在元坝地区现场应用2口井,现场应用表明,在元坝X-701井钻井液最高密度为2.34 g/cm3,电测显示温度为157 ℃,酸根含量达21 157 mg/L,该体系依然具有良好的流变性,抗污染能力强,两趟电测均一次顺利到底,连续静止7 d返出钻井液黏度48 s,仅用28.88 d完成了侧钻任务。该体系的成功应用,标志着生物质资源在高温高密度钻井液中取得新的突破,满足了高温小井眼对钻井液的需求,对元坝地区深井、超深井具有较好的指导借鉴意义。Abstract: In view of the fact that the marine carbonate formation in Yuanba area is often polluted by acid radical and hydrogen sulfide, which causes the viscosity and water loss of drilling fluid to rise, the temperature resistance to decline, and the flow pattern to be difficult to control, bringing great challenges to on-site maintenance. In this paper, a bio chemical method is proposed to modify lignin to develop an environment-friendly filtration reducer LDR of biomass synthetic resin with a cluster multi branch structure. The performance evaluation results show that the product has a temperature resistance of 200 ℃, a salt resistance of 25%, and a calcium resistance of 3,000 mg/L, showing a strong temperature and salt resistance performance. With this as the core of the high temperature resistant material, a high temperature resistant composite brine drilling fluid system is constructed by introducing potassium, calcium, and sodium plasma. Two wells were applied in Yuanba area. The field application shows that the maximum density of drilling fluid in Yuanba X-701 well is 2.34 g/cm3, the electric measurement shows that the temperature is 157 ℃, and the acid radical content is 21,157 mg/L. The system still has good rheological property and strong anti pollution ability. The two electric measurements successfully reached the bottom at one time, and the drilling fluid viscosity returned for 48 s after 7 consecutive days of standstill. It only took 28.88 days to complete the sidetracking task. The successful application of this system indicates that biomass resources have made a new breakthrough in high-temperature and high-density drilling fluid, effectively meeting the requirements of high-temperature slim hole for drilling fluid, and has good guidance and reference significance for deep wells and ultra deep wells in Yuanba area.
-
Key words:
- Biomass /
- Compound salt /
- Settlement stability /
- Rheology
-
表 1 不同温度老化后基浆性能
T/
℃AV/
mPa·sPV/
mPa·sYP/
PaGel/
Pa/PaFLHTHP/
mL150 20.5 9 11.5 6.0/8.5 13.2 180 19.0 9 10.0 6.0/12.0 18.6 200 31.0 15 16.0 7.0/14.0 21.2 表 2 不同盐含量对钻井液性能的影响
NaCl/
%T/
℃AV/
mPa·sPV/
mPa·sYP/
PaGel/
Pa/PaFLHTHP/
mL15 200 31.0 15 16.0 6.0/12.0 21.2 20 30.0 15 15.0 6.5/12.0 20.4 25 37.5 17 20.5 8.0/13.0 24.6 30 50.0 25 25.0 11.0/14.0 46.2 表 3 不同钙含量对钻井液性能影响
CaCl2/% AV/mPa·s PV/mPa·s YP/Pa FLAPI/mL 0.3 39.0 18 21.0 8.4 0.5 33.0 12 21.0 10.6 0.8 35.0 17 18.0 13.2 1.0 34.5 16 18.5 16.8 表 4 不同密度重晶石加重钻井液性能结果
ρ/
g·cm−3AV/
mPa·sPV/
mPa·sYP/
Paφ6/φ3 Gel/
Pa/PaFL/
mLFLHTHP/
mL4.2 65 53 12 9/6 3.0/10.5 2.6 11.4 4.3 63 52 11 8/5 2.5/9.0 2.4 10.8 4.4 58 49 9 7/4 2.0/7.5 2.2 11.0 表 5 不同除硫剂加量的钻井液性能结果
除硫剂/
%AV/
mPa·sPV/
mPa·sYP/
Paφ6/φ3 Gel/
Pa/PaFL/
mLFLHTHP/
mL2 48.0 37.0 11.0 9/7 3.5/10 1.2 9 4 45.0 35.0 10.0 8/7 3.5/8.0 1.8 11 6 36.5 29.0 7.5 6/3 1.5/2.5 3.2 14 8 29.0 28.0 1.0 4/1 0.5/2.5 6.0 65 表 6 不同纯碱加量的钻井液性能结果
纯碱/
%AV/
mPa·sPV/
mPa·sYP/
PaGel/
Pa/PaFL/
mLFLHTHP/
mLCO3 2−/
mg·L-1HCO3 −/
mg·L-10 31 23 8 2.0/6.5 1.8 10.0 2 46 32 14 3.0/9.5 2.0 11.2 9868 9391 4 50 33 17 4.0/11.0 2.2 26.4 34 566 16 468 -
[1] 周启成,单海霞,位华,等. 环保型生物质合成树脂降滤失剂[J]. 钻井液与完井液,2020,37(5):593-596.ZHOU Qicheng, SHAN Haixia, WEI Hua, et al. A synthetic resin filter loss reducer made from environmentally friendly biomasses[J]. Drilling Fluid & Completion Fluid, 2020, 37(5):593-596. [2] 蔡利山,林永学,杨小华,等. 官深1井超高密度钻井液技术[J]. 石油学报,2013,33(1):169-177. doi: 10.7623/syxb201301022CAI Lishan, LIN Yongxue, YANG Xiaohua, et al. A Study on the ultra-high density drilling fluid of Well Guanshen-1[J]. Acta Petrolei Sinica, 2013, 33(1):169-177. doi: 10.7623/syxb201301022 [3] 赵福,王平全,刘常旭,等. 不同粒径的加重剂对水基钻井液黏度效应的影响[J]. 钻井液与完井液,2008,25(3):74-76.ZHAO Fu, WANG Pingquan, LIU Changxu, et al. The effect of weighting agents of different particle sizes on the viscosity of water base drilling[J]. Drilling Fluid & Completion Fluid, 2008, 25(3):74-76. [4] 李公让,赵怀珍,薛玉志,等. 超高密度高温钻井液流变性影响因素研究[J]. 钻井液与完井液,2009,26(1):12-14. doi: 10.3969/j.issn.1001-5620.2009.01.005LI Gongrang, ZHAO Huaizhen, XUE Yuzhi, et al. Rheology control of ultra high density high temperature drilling fluids[J]. Drilling Fluid & Completion Fluid, 2009, 26(1):12-14. doi: 10.3969/j.issn.1001-5620.2009.01.005 [5] 王富华,王瑞和,刘江华,等. 高密度水基钻井液高温高压流变性研究[J]. 石油学报,2010,31(2):306-310. doi: 10.7623/syxb201002023WANG Fuhua, WAMG Ruihe, LIU Jianghua, et al. Rheology of high-density water-baseddrilling fluid at hight temperature and high pressure[J]. Acta Petrolei Sinica, 2010, 31(2):306-310. doi: 10.7623/syxb201002023 [6] 黄维安,邱正松,徐加放,等. 重晶石粒度级配对加重钻井液流变性的影响[J]. 钻井液与完井液,2010,27(4):23-25. doi: 10.3969/j.issn.1001-5620.2010.04.008HUANG Wei’an, QIU Zhengsong, XU Jiafang, et al. Effect of partical sizing barite on weighted drilling fluid rheology[J]. Drilling Fluid & Completion Fluid, 2010, 27(4):23-25. doi: 10.3969/j.issn.1001-5620.2010.04.008 [7] 蒲晓林,黄林基,罗兴树,等. 深井高密度水基钻井液流变性、造壁性控制原理[J]. 天然气工业,2001,21(6):48-51. doi: 10.3321/j.issn:1000-0976.2001.06.015PU Xiaolin, HUANG Linji, LUO Xinshu, et al. Control principle of rheology and wall building of deep well high density water-based drilling fluid[J]. Natural Gas Industry, 2001, 21(6):48-51. doi: 10.3321/j.issn:1000-0976.2001.06.015 [8] 王中华,王旭,杨小华. 超高温钻井液体系研究(Ⅱ)——聚合物降滤失剂的合成与性能评价[J]. 石油钻探技术,2009,37(4):1-6. doi: 10.3969/j.issn.1001-0890.2009.04.001WANG Zhonghua, WANG Xu, YANG Xiaohua. Ultra-high temperature drilling fluid system study (2): synthesisi and evaluation of a polymer fluid loss additives[J]. Petroleum Drilling Techniques, 2009, 37(4):1-6. doi: 10.3969/j.issn.1001-0890.2009.04.001 -