川东北飞仙关高含硫地层油基钻井液复合除硫技术

肖金裕; 周华安; 暴丹; 汪伟; 杨兰平; 江显俊

doi:10.12358/j.issn.1001-5620.2024.03.010

川东北飞仙关高含硫地层油基钻井液复合除硫技术

doi: 10.12358/j.issn.1001-5620.2024.03.010

1.
川庆钻探钻井液技术服务公司, 重庆400021
2.
川庆钻探钻井液技术服务公司, 成都610056
3.
重庆科技学院化学化工学院，重庆401331

基金项目: 川庆钻探工程有限公司科技攻关项目“川东北高含硫气藏钻井液抗硫及承压堵漏关键技术深化研究与试验”(CQ2021B-46-Z2-3)。

详细信息

作者简介:
肖金裕，高级工程师，1969年生，毕业于石油大学（华东）开发系泥浆专业，现在从事现场钻井液技术应用研究工作。电话 19922800109；E-mail：xiaojy_sc@cnpc.com.cn。

通讯作者:
周华安，E-mail：zhouhan_sc@cnpc.com.cn。

中图分类号: TE254.3
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出版历程
- 收稿日期: 2024-01-15
- 修回日期: 2024-02-24
- 刊出日期: 2024-06-30

Use of Compound Desulfurizing Agent in High Sulfur Feixianguan Formation Drilling in Northeast Sichuan with Oil Based Drilling Fluids

1.
Drilling Fluid Technology Service Company of Chuanqing Drilling Engineering Company, Chongqing 400021
2.
Drilling Fluid Technology Service Company of Chuanqing Drilling Engineering Company, Chendu, Sichuan 610056
3.
School of Chemistry and Chemical Engineering,Chongqing University of Science and Technology, Chongqing 401331

摘要

摘要: 川东北地区飞仙关组气藏属于高含硫气藏～特高含硫气藏，针对川东北飞仙关高含硫气藏地质特点和钻井液技术难点分析，提出油基钻井液复合除硫技术对策。通过室内实验优选出除硫效果好的除硫剂，并进行了优选除硫剂复合配方优化研究和除硫剂高温老化除硫效果评价实验。研究表明，复合配方3%YT-3+3%CLC-2+3%JD-2的H₂S预防率高达99.14%，清除率达到100%，具有优良的除硫能力，复合配方中的锌基类除硫剂与钻井液中的H₂S反应生成稳定的难溶硫化物（ZnS），三嗪类除硫剂和醇醚酰胺类除硫剂主要通过物理和化学反应作用除硫，反应比较迅速，且不可逆，能够去除钻井液中的硫化氢，消除硫化氢对钻井液性能的影响和对钻具的腐蚀。该复合除硫技术在坡005-X4井和坡002-H5井飞仙关高含硫地层现场应用非常成功，在钻进过程中以及起下钻循环排后效期间地面均未检测到H₂S气体溢出，钻井液中S²⁻含量始终监测为零，充分说明复合除硫技术除硫效果显著，能够满足高含硫井钻进的要求，为下川东高含硫气藏钻井工程除硫剂的优选提供良好借鉴。
- 飞仙关高含硫地层 /
- 除硫剂优选 /
- 复合除硫技术
Abstract: The Feixianguan gas reservoir in northeast Sichuan is a high to ultra-high sulfur content reservoir. Based on the analyses of the geology of the Feixianguan formation and the difficulties in drilling fluid operation, a desulfurization measure is presented for field operation with oil based drilling fluids. High performance desulphurizing agents are first selected through laboratory experiment, and studies on the compounding of these agents are conducted to develop a compound desulphurizing agent. Evaluation of the performance of the compound desulphurizing agent to remove sulfur at elevated temperatures shows that the compound desulphurizing agent containing 3%YT-3+3%CLC-2 and 3%JD-2 has percent H₂S prevention of 99.14% and percent H₂S removal of 100%. The zinc-based desulfurizing agent in the formula reacted with H₂S in the drilling fluids to produce insoluble chemical ZnS. The triazine and alcohol ether amide desulfurizing agents mainly remove H₂S through fast and irreversible physical and chemical reactions. This desulfurization technology has been successfully applied on the well Po-005-X4 and the well Po-002-H5 when drilled into the high sulfur content Feixianguan formation, no H₂S has been detected during drilling and during circulation after tripping for degassing, and the S²⁻ content of the drilling fluid is zero throughout the whole drilling operation. The successful field operation fully demonstrates that the technology has a significant desulfurization performance and can meet the requirements of drilling high sulfur wells.
- The Feixianguan high sulfur content formation /
- Optimization of desulfurizing agent /
- Compound desulfurizing technology

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表 1 不同类型除硫剂在油基钻井液中的除硫效果评价

除硫剂	出口达到不同H₂S浓度（mg·L⁻¹）对应的时间/min
除硫剂	0	0.0015	0.0030	0.0045	0.0060	0.0075	0.0090	0.0105	0.0120	0.0135	0.0150
空白	3.73	3.78	3.85	3.90	3.95	3.97	4.00	4.07	4.08	4.10	4.13
YT-3	131.70	174.80	210.10	250.40	290.70	320.10	360.40	400.80	435.40	470.20	501.50
JD-2	95.65	110.28	115.85	125.38	138.55	151.80	160.82	172.9	180.08	185.17	190.22
CLC-2	40.12	43.48	45.52	47.67	49.38	50.10	51.20	52.20	53.25	54.27	55.28
CLJ	3.83	4.08	4.25	4.37	4.47	4.55	4.62	4.68	4.75	4.82	4.87
铁基类A	3.93	4.07	4.18	4.27	4.35	4.43	4.52	4.58	4.67	4.75	4.83
锌基类A	4.33	4.40	4.48	4.52	4.53	4.57	4.60	4.62	4.63	4.65	4.67
有机酸锌盐A	4.17	4.23	4.25	4.27	4.28	4.3	4.32	4.33	4.35	4.37	4.38
有机酸锌盐B	5.33	5.83	6.4	7.07	7.3	7.43	7.53	7.62	7.72	7.83	7.95
碳基类A（200目）	5.45	5.79	5.97	6.42	6.68	6.97	7.22	7.50	7.70	7.83	7.92
碳基类A（400目）	5.35	5.50	5.62	5.68	5.73	5.78	5.83	5.87	5.90	5.93	5.97
碳基类A（600目）	3.77	3.80	3.89	3.92	4.02	4.18	4.32	4.40	4.45	4.50	4.55

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表 2 油基钻井液中高效除硫剂配方优化实验结果

除硫剂配方	出口达到不同H₂S浓度（mg·L⁻¹）对应的时间/min
除硫剂配方	0	0.0015	0.0030	0.0045	0.0060	0.0075	0.0090	0.0105	0.0120	0.0135	0.0150
空白	1.25	1.30	1.35	1.39	1.43	1.48	1.52	1.55	1.60	1.63	1.65
1%YT-3+1%JD-2	1.90	1.97	2.05	2.10	2.15	2.20	2.25	2.27	2.30	2.33	2.37
2%YT-3+2%JD-2	65.32	80.55	83.48	87.68	90.75	93.24	95.02	96.21	97.45	98.24	99.35
3%YT-3+3%JD-2	74.40	96.40	112.20	120.10	125.30	129.20	132.40	136.10	140.40	146.50	149.50
1%YT-3+1%CLC-2	2.48	2.48	2.49	2.49	2.50	2.50	2.51	2.51	2.52	2.52	2.53
2%YT-3+2%CLC-2	32.33	45.45	55.47	63.61	66.28	70.42	72.54	73.98	74.53	75.17	75.96
3%YT-3+3%CLC-2	57.13	69.50	80.68	91.72	98.03	102.03	105.23	106.38	107.50	108.58	109.65
1%CLC-2+1%JD-2	1.90	1.98	2.02	2.10	2.16	2.23	2.32	2.38	2.43	2.50	2.57
2%CLC-2+2%JD-2	16.20	20.50	23.70	25.90	27.90	28.10	29.10	29.30	30.00	30.30	30.50
3%CLC-2+3%JD-2	37.10	41.70	45.20	47.50	50.20	51.70	52.10	54.10	55.20	56.10	57.50
1%YT-3+1%CLC-2+1%JD-2	9.02	9.50	9.85	10.16	10.33	10.52	10.68	10.82	10.95	11.07	11.20
2%YT-3+2%CLC-2+2%JD-2	127.77	128.24	129.46	130.07	131.15	132.25	133.10	134.12	134.89	135.12	135.58
3%YT-3+3%CLC-2+3%JD-2	344.83	344.95	345.05	345.08	345.22	345.30	345.38	345.46	345.48	345.52	345.55

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表 3 高温高压老化抗硫油基钻井液的除硫效果评价

除硫剂/%	污染前硫化氢浓度/（mg·L⁻¹）	预防率/%	污染后硫化氢浓度/（mg·L⁻¹）	清除率/%
空白			0.072
3%YT-3	0.013	82.25	0.012	83.27
5%YT-3	0.004	95.07	0.001	99.10
3%JD-2	0.016	78.02	0.014	80.63
5%JD-2	0.007	90.30	0.005	92.59
3%CLC-2	0.033	54.60	0.027	63.07
5%CLC-2	0.021	70.48	0.014	80.29
3%碳基类A（200目）	0.053	25.73	0.052	27.20
5%碳基类A（200目）	0.039	46.09	0.037	49.27
3%铁基类A	0.059	18.12	0.054	25.00
5%铁基类A	0.044	38.31	0.041	43.65
3%YT-3+3%JD-2	0.001	98.70	0.000	100.00
1%YT-3+3%JD-2	0.007	90.75	0.006	92.00
4%YT-3+2%JD-2	0.001	98.94	0.000	100.00
3%YT-3+3%CLC-2+3%JD-2	0.001	99.14	0.000	100.00

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表 4 两口井抗硫油基钻井液应用井段性能情况表

井号	井深/ m	ρ/ g·cm⁻³	FV/ s	FL_HTHP/ mL	PV/ mPa·s	YP/ Pa	YP/PV/ Pa/mPa·s	Pom	ES/ V
坡005-X4	3666～3790	1.02～1.03	66～76	2.4～3.0	21～34	4.0～7.5	0.19～0.26	4.0～4.5	215～420
	3790～3990	1.10～1.17	64～69	2.6～3.0	22～26	4.0～4.5	0.15～0.18	4.2～4.5	325～468
	3990～4254	1.17～1.20	67～69	2.2～2.6	25～26	3.5～4.5	0.14～0.18	4.0～4.8	450～484
	4254～4515	1.15～1.16	59～69	2.4～2.6	24～25	3.5～5.0	0.14～0.20	4.0～5.0	436～465
坡002-H5	3878～4177	1.00	53～56	2.7～2.8	12～16	2.5～5.0	0.15～0.41	4.0～4.5	425～466
	4177～4525	1.00	54～56	2.4～2.8	15～16	4.0～4.5	0.25～0.30	4.4～4.5	423～435
	4525～4753	1.00	54～56	2.6～2.8	15～17	4.0～4.5	0.25～0.27	4.3～4.5	422～431
	4752～5010	1.00～1.02	52～56	2.2～2.6	15～18	4.0～4.5	0.25～0.30	4.5～4.6	429～435

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表 5 两口井飞仙关组钻井情况表

井号	井段/m	层位	钻井周期/d	机械钻速/(m·h⁻¹)	进尺/m
坡005-X4井	3666～4515	飞三～飞一段	12.0	8.76	849
坡002-H5井	3878～5010	飞三～飞一段	8.9	11.37	1132

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表 6 2口井钻进过程中硫化氢含量检测结果

井号	井深/ m	层位	ρ/ g·cm⁻³	烃值/ %	探头检测H₂S浓度/ mg·L⁻¹	钻井液S²⁻浓度/ mg·L⁻¹
坡005-X4井	3710	飞三～飞一	1.03	14.41	0	0
	3823	飞三～飞一	1.10	18.13	0	0
	4050	飞三～飞一	1.18	15.18	0	0
	4222	飞三～飞一	1.20	9.16	0	0
	4254	飞三～飞一	1.15	10.14	0	0
	4450	飞三～飞一	1.16	8.64	0	0
坡002-H5井	4150	飞三～飞一	0.98	23.89	0	0
	4296	飞三～飞一	0.99	13.48	0	0
	4500	飞三～飞一	1.00	15.77	0	0
	4612	飞三～飞一	1.00	18.72	0	0
	4792	飞三～飞一	1.00	19.15	0	0
	4900	飞三～飞一	1.00	18.84	0	0

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表 7 同井场2口井起下钻后效中硫化氢含量检测结果

井号	除硫剂配比方式	井深/ m	层位	静止时间/ h	ρ/ g·cm⁻³	后效烃值最高/ %	检测H₂S浓度/ mg·L⁻¹
坡002-H4井（第1轮井）	2.5%CLJ+0.5%JD-2	5056	飞三～飞一	62.16	1.06	53.15	0 ↑ 0.015 ↑ 0.054
		5056	飞三～飞一	39.83	1.05	27.75	0 ↑ 0.015 ↑ 0.056
		5056	飞三～飞一	19.00	1.19	57.32	0 ↑ 0.008↑ 0.042
		5056	飞三～飞一	5.67	1.06	25.11	0 ↑ 0.005 ↑ 0.011
		5030	飞三～飞一	4.98	1.08	64.77	0 ↑ 0.018
坡002-H5井（第2轮井）	3%CLC-2+2%YT-3+3%JD-2	5010	飞三～飞一	19.50	1.02	19.97	0
		5010	飞三～飞一	97.10	1.03	26.67	0
		5010	飞三～飞一	125.83	1.05	25.53	0

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川东北飞仙关高含硫地层油基钻井液复合除硫技术

doi: 10.12358/j.issn.1001-5620.2024.03.010

作者简介:
肖金裕，高级工程师，1969年生，毕业于石油大学（华东）开发系泥浆专业，现在从事现场钻井液技术应用研究工作。电话 19922800109；E-mail：xiaojy_sc@cnpc.com.cn。

通讯作者:
周华安，E-mail：zhouhan_sc@cnpc.com.cn。

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Use of Compound Desulfurizing Agent in High Sulfur Feixianguan Formation Drilling in Northeast Sichuan with Oil Based Drilling Fluids

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川东北飞仙关高含硫地层油基钻井液复合除硫技术

doi: 10.12358/j.issn.1001-5620.2024.03.010

作者简介: 肖金裕，高级工程师，1969年生，毕业于石油大学（华东）开发系泥浆专业，现在从事现场钻井液技术应用研究工作。电话 19922800109；E-mail：xiaojy_sc@cnpc.com.cn。

通讯作者: 周华安，E-mail：zhouhan_sc@cnpc.com.cn。

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Use of Compound Desulfurizing Agent in High Sulfur Feixianguan Formation Drilling in Northeast Sichuan with Oil Based Drilling Fluids

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出版历程

目录

作者简介:
肖金裕，高级工程师，1969年生，毕业于石油大学（华东）开发系泥浆专业，现在从事现场钻井液技术应用研究工作。电话 19922800109；E-mail：xiaojy_sc@cnpc.com.cn。

通讯作者:
周华安，E-mail：zhouhan_sc@cnpc.com.cn。