Bottom Water Identification and Water Control Strategy in Fault-Controlled Condensate Gas Reservoirs in Shunbei Oil and Gas Field, Tarim Basin

doi:10.7657/XJPG20250414

Abstract

Abstract:

Fault-controlled condensate gas reservoirs in the Shunbei No.4 fault zone of Tarim Basin contain high-angle fractures, leading to the possibility of bottom water coning. The bottom water connection points and gas-water connection modes in the Shunbei No.4 fault zone were identified by combining seismic and reservoir characterization results, and the scale of the water body was evaluated using the reservoir characterization method and the material balance method. Combined with the parameters such as the energy indication curve of the gas reservoir, the water avoidance height, and the gas production rate, the water invasion risk of production wells in the Shunbei No.4 fault zone was qualitatively assessed. The on-site water control measures such as the managed liquid production for controlling water coning and the gas injection for controlling water coning have achieved satisfactory results in enhanced oil recovery.

Key words: Tarim Basin, Shunbei oil and gas field, fault-controlled condensate gas reservoir, strike-slip fault, bottom water identification, water invasion characteristic, water control measure

CLC Number:

TE37

LIU Rui, HE Xinming, ZHANG Yun. Bottom Water Identification and Water Control Strategy in Fault-Controlled Condensate Gas Reservoirs in Shunbei Oil and Gas Field, Tarim Basin[J]. Xinjiang Petroleum Geology, 2025, 46(4): 498-504.

Figures/Tables 9

Fig. 1.

Table 1.

Table 2.

Fig. 2.

Table 3.

Fig. 3.

Fig. 4.

Table 4.

Table 5.

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井名	气水界面深度/m	井名	气水界面深度/m
顺北4-1H井	-7 013.1	顺北41X井	-7 999.0
顺北4-3H井	-7 082.3	顺北4-4H井	-7 593.6
顺北42X井	-6 944.0	顺北45X井	-7 786.1
顺北4-13H井	-7 007.6	顺北4-6H井	-7 412.9
顺北47X井	-8 313.2	顺北4-9H井	-7 374.0
顺北4-12H井	-7 135.2	顺北43X井	-7 285.6
顺北46X井	-7 284.8	顺北4-5H井	-7 593.9
顺北4-8H井	-7 498.7	顺北44X井	-7 859.0
顺北4-7H井	-7 584.2	顺北4-10H井	-7 584.1
顺北4-2H井	-7 175.8

分段	井名	气藏孔隙体积/10⁴ m³	水体孔隙体积/10⁴ m³	静态水体倍数
北段	顺北44X井	31 572	74 352	0.4
	顺北43X井	8 371	31 577	0.3
	顺北45X井	39 132	64 165	0.6
中段	顺北4-4H井	23 356	52 360	0.4
	顺北41X井	17 986	32 235	0.6
	顺北4-2H井	18 671	23 671	0.8
	顺北4-7H井	32 835	57 342	0.6
	顺北46X井	38 284	57 376	0.7
南段	顺北4-12H井	16 733	42 778	0.4
	顺北47X井	7 035	24 592	0.3
	顺北4-13H井	13 319	23 319	0.6
	顺北42X井	30 677	58 060	0.5

分段	井名	储集体类型	物质平衡法计算储量/10⁸ m³	水侵量/10⁴ m³	动态水体倍数
北段	顺北44X井	洞-缝-洞	21.6	0.6	1.0
	顺北4-5H井	洞	16.2	27.1	1.3
	顺北4-9H井	洞	8.0	32.5	1.3
	顺北4-6H井	洞	10.5	15.8	1.2
	顺北45X井	洞-缝-洞	8.3	2.0	1.1
中段	顺北4-4H井	缝-洞	3.3	6.5	1.1
	顺北41X井	洞-缝-洞	4.7	15.4	1.3
	顺北4-7H井	洞	8.8	29.6	2.2
	顺北46X井	洞-缝-洞	3.7	32.3	1.5
	顺北4-12H井	缝-洞-缝-洞	3.9	16.7	1.2
南段	顺北47X井	洞-缝-洞	4.5	8.1	1.1
	顺北4-13H井	缝-洞-缝-洞	9.8	1.5	1.4
	顺北4-3H井	洞	5.7	18.9	1.2
	顺北4-1H井	缝-洞	3.8	9.9	1.7

分段	井名	避水高度/m	气水连通模式	水体倍数	气采出程度/ %	采气速度/ %	能量指示曲线特征	水侵风险等级
北段	顺北44X井	861	直接连通	1.0	16.2	4.5	直线	中风险
	顺北4-5H井	529	间接连通	1.3	19.6	9.2	直线	无风险
	顺北43X井	368	不连通	0.9	38.9	13.2	直线	高风险
	顺北4-9H井	520	间接连通	1.3	30.2	6.0	直线	无风险
	顺北4-6H井	369	不连通	1.2	24.3	11.6	直线	中风险
	顺北45X井	219	间接连通	1.1	19.4	6.2	末端上翘	高风险
中段	顺北4-4H井	363	直接连通	1.1	31.7	31.7	直线	无风险
	顺北41X井	858	间接连通	1.3	25.1	25.1	直线	中风险
	顺北4-2H井	87	直接连通	1.0	14.2	8.0	直线	无风险
	顺北4-7H井	578	间接连通	2.2	18.5	8.5	直线	无风险
	顺北4-8H井	468	间接连通	0.8	13.8	5.1	直线	无风险
	顺北46X井	45	直接连通	1.5	26.7	7.4	末端变缓	高风险
	顺北4-12H井	299	直接连通	1.2	22.6	22.6	直线	无风险
南段	顺北47X井	279	间接连通	1.1	34.1	9.2	直线	无风险
	顺北4-13H井	139	直接连通	1.4	5.4	5.4	末端变缓	高风险
	顺北42X井	337	直接连通	1.0	24.3	7.1	直线	中风险
	顺北4-3H井	336	间接连通	1.2	22.3	12.7	直线	无风险
	顺北4-1H井	124	直接连通	1.7	28.6	6.9	直线	低风险

井名	注气轮次	注气量/ 10⁴ m³	注气压锥前			注气压锥后			增油量/ t	增气量/ 10⁴ m³
井名	注气轮次	注气量/ 10⁴ m³	日产油量/t	日产气量/ 10⁴ m³	含水率/ %	日产油量/t	日产气量/t	含水率/ %	增油量/ t	增气量/ 10⁴ m³
顺北84井	1	720	26.3	36 518	58.5	29.4	80 670	10.6	756	1 077
顺北801X井	1	500	7.4	54 119	12.5	12.4	96 412	1.2	715	605
顺北803井	1	997	19.2	62 334	11.6	44.7	86 413	32.2	3 417	323
顺北82井	2	1 260	11.7	38 075	64.7	20.1	55 875	3.7	739	157