关井井涌余量在钻井工程设计中的应用浅析

摘要/Abstract

摘要：

目前陆上油气井钻井工程设计中井控部分主要包括井口装置、试压及常规作业中的井控要求等,并未涉及关井溢流量计算。因此,提出了在钻井工程设计中加入关井井涌余量,并给出一种关井井涌余量的计算方法。同时结合川渝地区A气田LJ-20井 $?$ 311.1mm井眼钻进工况,就如何在钻井设计中增加关井井涌余量并在现场钻井发生溢流时辅助井控作业进行实例应用。计算结果表明,在给定井涌强度KI值工况下,井眼越深则其井涌余量越小;同一井深条件下,KI值越大则其井涌余量越小。研究认为：在钻井工程设计中加入关井井涌余量是必要的,其能够有效判断现场溢流工况下进行关井作业是否安全;同时应进一步思考如何实现更具现场适用性的动态关井井涌余量值,以便更好地在地层压力难以精准预测的深部地层进行安全钻井。

关键词: 溢流, 钻井工程设计, 关井井涌余量, 井涌强度

Abstract:

Currently, the well control in the drilling engineering design of onshore oil and gas wells mainly includes wellhead device, pressure test and well control requirements in conventional operation, and does not involve the calculation of the overflow quantity of shut-in. In this paper, kick tolerance is considered to be added to the design above, and a calculation method of kick tolerance is given. Combined with the drilling condition of $?$ 311.1 mm hole of well LJ-20 in gas field A in the Sichuan-Chongqing area, examples were applied to analyze how to add kick tolerance and assist the well control of overflow in drilling site. The calculation results showed that, with the given KI value, the deeper the hole was, the smaller the kick tolerance would be; while at the same depth, the kick tolerance also decreased with the increase of the KI value. Therefore, it is necessary to add the kick tolerance to the design. Thus, whether the shut-in operation with overflow is safe or not can be effectively judged. At the same time, further considering should be given to how to obtain the dynamic kick tolerance of shut-in which is more applicable in the field, so as to assist in safe drilling in the deep formations where pressure is difficult to be predicted accurately.

Key words: overflow, drilling engineering design, kick tolerance of shut-in, strength of kick tolerance

中图分类号:

TE22

伍葳,魏云锦,郭建华,付志,杨华建. 关井井涌余量在钻井工程设计中的应用浅析[J]. 油气藏评价与开发, 2019, 9(4): 47-50.

Wu Wei,Wei Yunjin,Guo Jianhua,Fu Zhi,Yang Huajian. Analysis of applying kick tolerance of shut-in in drilling engineering design[J]. Reservoir Evaluation and Development, 2019, 9(4): 47-50.

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参考文献 16

[1]	石油钻井工程专业标委会. SY/T 6426—2005钻井井控技术规程[S].北京: 石油工业出版社, 2005.
[2]	SANTOS O L A, MENDES J R P, RIBEIRO P R. The development and application of a software to assist the drilling engineer during well control operations in deep and ultra deep waters[C]// paper SPE-81184-MS presented at the SPE Latin American and Caribbean Petroleum Engineering Conference, 27-30 April 2003, Port-of-Spain, Trinidad and Tobago.
[3]	SANTOS H M, CATAK E, VALLURI S. Kick tolerance misconceptions and consequences to well design[C]// paper SPE-140113-MS presented at the SPE/IADC Drilling Conference and Exhibition, 1-3 March 2011, Amsterdam, The Netherlands.
[4]	UMAR L, YAP Y T, MURAD M S B A, et al. Dynamic multiphase kick tolerance allows safe drilling which led to huge gas discovery in a HPHT exploration well in Malaysia[C]// paper IPTC-17460-MS presented at the International Petroleum Technology Conference, 19-22 January 2014, Doha, Qatar.
[5]	NORDIN N A, AZIZ I A B A, UMAR L, et al. Dynamic modeling of wellbore pressures allows successful drilling of a narrow margin HPHT exploration well in Malaysia[C]// paper SPE-155580-MS presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, 9-11 July 2012, Tianjin, China.
[6]	REDMANN Jr K P . Understanding kick tolerance and its significance in drilling planning and execution[J]. SPE Drilling Engineering, 1991,6(4):245-249.
[7]	SANTOS O, ADASANI I, AZAR J J, et al. Determination of casing setting depth using kick tolerance concept[C]// paper SPE 30220-MS presented at the Petroleum Computer Conference, 11-14 June 1995, Houston, Texas, USA.
[8]	OHARA S, BOURGOYNE A T. Circulating kick tolerance for deep water drilling [C]// IADC,well control conference of the Americas, Caracas, Venezuela, 1998.
[9]	陈平 . 钻井与完井工程[M]. 北京: 石油工业出版社, 2009.
[10]	郝希宁, 苏峰, 蒋世全 , 等. 南海深水钻井井涌余量主控因素分析[J]. 石油钻采工艺, 2015,37(1):60-63.
[11]	金业权, 李成, 吴谦 . 深水钻井密度井涌余量计算及应用[J]. 钻采工艺, 2016,39(2):23-26.
[12]	金业权, 李成, 吴谦 . 深水钻井井涌余量计算及压井方法选择[J]. 天然气工业, 2016,36(7):68-73.
[13]	陈彬, 罗俊丰, 叶吉华 , 等. 深水井控成功实践与技术分析[J]. 石油钻采工艺, 2015,37(1):129-131.
[14]	钱锋, 孔吉祥, 唐小雯 . 深水钻井井身结构设计参数的选取[J]. 科学技术与工程, 2014,14(13):162-165.
[15]	刘凯 . 如何认识和计算井涌余量[J]. 西南石油学院学报, 1990,12(1):37-44.
[16]	郝俊芳 . 如何计算井涌余量[J]. 西南石油学院学报, 1983,5(3):45-50.

井深/ m	SIDPP/ MPa	H_max/ m	V₁/ m³	V′/ m³	P_地层/ MPa	V₂/ m³	KT/ m³
914	0.54	613.94	24.19	38.89	10.23	55.73	24.19
1 067	0.63	603.16	23.77	38.21	11.93	46.93	23.77
1 219	0.72	592.38	23.34	37.52	13.64	40.33	23.34
1 372	0.81	581.60	22.92	36.84	15.34	35.20	22.92
1 524	0.90	570.82	22.49	36.16	17.04	31.09	22.49
1 676	0.99	560.04	22.07	35.48	18.75	27.73	22.07
1 829	1.08	549.26	21.64	34.79	20.45	24.93	21.64
1 981	1.17	538.48	21.22	34.11	22.16	22.56	21.22
2 134	1.26	527.70	20.79	33.43	23.86	20.53	20.53
2 286	1.35	516.92	20.37	32.74	25.57	18.77	18.77
2 311	1.36	515.15	20.30	32.63	25.85	18.50	18.50

井深/ m	SIDPP/ MPa	H_max/ m	V₁/ m³	V′/ m³	P_地层/ MPa	V₂/ m³	KT/ m³
914	1.08	549.26	21.64	34.79	10.76	47.37	21.64
1 067	1.26	527.70	20.79	33.43	12.56	39.01	20.79
1 219	1.44	506.14	19.94	32.06	14.35	32.74	19.94
1 372	1.62	484.58	19.09	30.70	16.15	27.86	19.09
1 524	1.79	463.02	18.24	29.33	17.94	23.96	18.24
1 676	1.97	441.47	17.40	27.96	19.74	20.77	17.40
1 829	2.15	419.91	16.55	26.60	21.53	18.11	16.55
1 981	2.33	398.35	15.70	25.23	23.32	15.85	15.70
2 134	2.51	376.79	14.85	23.87	25.12	13.93	13.93
2 286	2.69	355.23	14.00	22.50	26.91	12.25	12.25
2 311	2.72	351.69	13.86	22.28	27.21	12.00	12.00

井深/ m	SIDPP/ MPa	H_max/ m	V₁/ m³	V′/ m³	P_地层/ MPa	V₂/ m³	KT/ m³
914	1.40	510.46	20.11	32.34	11.09	42.74	20.11
1 067	1.63	482.43	19.01	30.56	12.94	34.62	19.01
1 219	1.87	454.40	17.91	28.78	14.78	28.53	17.91
1 372	2.10	426.37	16.80	27.01	16.63	23.80	16.80
1 524	2.33	398.35	15.70	25.23	18.48	20.01	15.70
1 676	2.57	370.32	14.59	23.46	20.33	16.91	14.59
1 829	2.80	342.29	13.49	21.68	22.18	14.33	13.49
1 981	3.03	314.27	12.38	19.91	24.02	12.14	12.14
2 134	3.27	286.24	11.28	18.13	25.87	10.27	10.27
2 286	3.50	258.21	10.17	16.36	27.72	8.65	8.65
2 311	3.54	253.61	9.99	16.07	28.02	8.40	8.40