川东南页岩气井压裂参数对开发效果的影响——以LP-133HF井为例

Abstract

Abstract:

Before the design of the horizontal wells' fracture, we took the well LP-133HF in the half deep to deep layer of the overpressure shale gas reservoir in southeast Sichuan basin as the research object. And by the software--CMG, we established the numerical model of the single well to simulate the sensibility of the fracture parameters of the horizontal wells and analyze the potential production promoting factors. The results showed that four factors, that is, the fracture conductivity, fracture half length, fracturing length and well spacing, affected most on the development of the shale gas wells, while the single fracturing length had the minimal effect and negative correlation. Finally, we obtained a set of fracturing parameters suitable for well LP-133HF, which is proved to be credible in field application. This analysis method is reliable and applicable for the guidance of the fracturing design. It has certain promotion significance.

Key words: shale gas, production analysis, CMG, fracturing parameter, fracture conductivity

CLC Number:

TE37

Liu Xin,Zhang Lina,Zhang Yaozu. Influence of fracturing parameters on development effects of shale gas wells in southeast Sichuan basin: A case of well LP-133HF[J].Reservoir Evaluation and Development, 2018, 8(5): 77-80.

Figures/Tables 7

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Fig. 1

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Fig. 2

References 7

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裂缝导流系数F_CD/（10^-3μm²·m）	裂缝半长/m	单段长/m	压裂段长/m	井距/m—比例配产	井距/m—同配产
0.01	10	40	600	200	200
0.05	30	60	800	300	300
0.1	50	80	1 000	400	400
0.5	70	100	1 200	500	500
1.0	90	120	1 400	600	600
1.5	110	140	1 600	700	700
2.0	130	160	1 800	800	800

参数	取值	累产气量 /(10⁷m³)	平均日产气量 /(10⁴m³·d^-1)	稳产时间/d	采出程度,%
导流系数F_CD/（10^-3μm²·m）	0.001	74.61	1.36	5	13.93
	0.05	74.80	1.37	21	13.97
	0.1	76.65	1.40	45	14.31
	0.5	92.15	1.68	73	17.21
	1.0	159.37	2.91	152	29.76
	1.5	224.06	4.09	669	41.84
	2.0	243.84	4.45	988	45.54

参数	取值	累产气量/(10⁷m³)	平均日产气量/(10⁴m³·d^-1)	稳产时间/ d	采出程度, %
裂缝半长x_f/m	10	98.33	1.79	7	18.36
	30	126.65	2.31	20	23.65
	50	158.75	2.90	181	29.65
	70	184.97	3.38	365	34.54
	90	209.76	3.83	546	39.17
	110	231.92	4.23	790	43.31
	130	247.14	4.51	988	46.15

参数	取值	累产气量/(10⁷m³)	平均日产气量/(10⁴m³·d^-1)	稳产时间/ d	采出程度, %
单段长/m	40	276.09	5.04	1 905	46.40
	60	274.99	5.02	1 876	46.22
	80	273.90	5.00	1 826	46.04
	100	271.40	4.95	1 800	45.61
	120	266.65	4.87	1 492	44.82
	140	256.94	4.69	1 339	43.19
	160	242.96	4.44	943	40.83

参数	取值	累产气量/(10⁷m³)	平均日产气量/(10⁴m³·d^-1)	稳产时间/d	采出程度, %
压裂段长/m	600	127.57	2.33	10	19.85
	800	168.38	3.07	212	26.20
	1 000	205.50	3.75	546	31.98
	1 200	237.00	4.33	882	36.88
	1 400	260.64	4.76	1 271	40.56
	1 600	273.17	4.98	1 734	42.51
	1 800	273.90	5.00	1 826	42.63

Influence of fracturing parameters on development effects of shale gas wells in southeast Sichuan basin: A case of well LP-133HF

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