稠油油藏高轮次吞吐储层变化规律——以HJ油田为例

doi:10.13809/j.cnki.cn32-1825/te.2022.05.014

Abstract

Abstract:

After multi-cycle steam stimulation in HJ Oilfield, the changes of reservoir physical properties are obvious and difficult to determine, which brings serious obstacles to the design and implementation of subsequent development measures. In order to solve this problem, the relationships among porosity, permeability, wettability and steam stimulation cycles are conducted by using one-dimensional physical simulation experimental setup after the design of sweep multiples based on two wells, Well-J151 and Well-J117 in HJ Oilfield. The results show that the physical property parameters of reservoir will change under the long-term sweep of high temperature steam. In the scope of steam sweep, both porosity and permeability all increase with the increase of the steam stimulation cycles. With the increase of steam stimulation cycles, the lipophilicity of reservoir rocks gradually weakened and the hydrophilicity gradually strengthened. Based on the experimental results, the relationship between sweep multiples and porosity growth rate, as well as the chart of the relationship between oil layer sweep multiples and permeability growth rate are established. The parameters of the porosity and permeability of reservoirs in different stages of steam stimulation development can be predicted by the above relationship and chart, and the relationship and chart can be also extended to other similar heavy oil reservoirs.

Key words: heavy oil, steam stimulation, sweep multiples, reservoir property, thermal recovery

CLC Number:

TE357

Keyang CHENG,Zhilin QI,Jie TIAN, et al. Change law of reservoir property during multi-cycle steam stimulation in heavy oil reservoir: A case study of HJ Oilfield[J]. Petroleum Reservoir Evaluation and Development, 2022, 12(5): 816-824.

Figures/Tables 10

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References 24

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井号	层位	油层厚度（m）	油层原始温度（℃）	原始含油饱和度（%）	孔隙度（%）	原始渗透率（μm²）	蒸汽干度（%）	注汽速率（t/d）	周期注汽量（t）
J151	Ⅲ_8-9¹	3.2	23.0	60.42	25.19	0.89	75	71.2	123.6
J151	Ⅲ_8-9²	7.6	23.0	40.62	34.87	7.64	75	119.8	2 550.4
J117	Ⅲ_5-6¹	2.8	28.7	59.10	26.50	0.41	75	6.4	14.7
	Ⅲ_5-6²	2.0	28.7	24.10	20.40	0.25	75	42.0	128.7
	Ⅲ_5-6³	1.2	28.7	43.50	30.20	1.41	75	81.1	420.4
	Ⅲ_5-6⁴	3.2	28.7	79.80	36.00	4.42	75	12.6	80.4
	Ⅲ_5-6⁵	0.8	28.7	24.20	30.90	0.75	75	9.9	115.8

实验组号	井号	层位	孔隙度（%）	渗透率（μm²）	周期注入量（mL）
1	J151	Ⅲ_8-9¹	28.78	0.97	120
2	J151	Ⅲ_8-9²	35.01	7.98	600
3	J117	Ⅲ_5-6¹	24.32	0.59	50
4		Ⅲ_5-6²	22.37	0.38	150
5		Ⅲ_5-6³	36.71	1.12	330
6		Ⅲ_5-6⁴	37.25	4.19	105
7		Ⅲ_5-6⁵	29.82	0.88	115

原油样品	黏温关系	油层条件下的黏度（mPa·s）
J151	lglg μ=-3.441 5lgT +9.189 3	33 081
J117	lglg μ=-3.701 9lgT +9.826 5	27 014

Change law of reservoir property during multi-cycle steam stimulation in heavy oil reservoir: A case study of HJ Oilfield

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