Experimental of Performance Evaluation of Multi Channel Bypass Screen

doi:10.3969/j.issn.1006-396X.2022.02.003

Abstract

Abstract:

During gravel packing operations in offshore oilfields, incomplete packing or packing failure may occur due to design, irregular borehole, formation, and other reasons, which has a great impact on the production of oil wells. A new type of multi?channel bypass screen is designed and developed. After conventional packing is completed, the gap section continues to be packed through the bypass channel. The performance of the designed multi?channel bypass screen is evaluated with a self?developed large full?scale horizontal well gravel packing test simulation system, and the following conclusions were obtained through experiments. In the gravel packing experiment through the bypass pipe without a sand bridge, the packing efficiency of the bypass section measured is 100.0%. When the glass conveying pipe is connected, the ratio of the return flow rate at the outlet to that of the glass conveying pipe is 0.68 $∶$ 1. The liquid flow rate in the bypass channel is greatly improved compared to that in the unpacked clean water experiment.The packing efficiency of the gravel packing test through the bypass pipe with a sand bridge is 62.5% higher than that of the conventional screen. The ratio of the return flow rate at the outlet to that of the glass conveying pipe is 1.60 $∶$ 1.The experiments show that the new screen has favorable bypass performance and conveying performance and high gravel packing efficiency.

Key words: Multi channel bypass screen, Gravel packing, Gap section, Conveying capacity, Bypass performance

摘要：

在海上油田砾石充填作业中，由于设计、井眼不规则、地层等原因导致充填不完全或充填失败，严重影响油井产量。设计研发了一种新型多流道旁通筛管，在常规充填结束后，旁通通道继续对亏空段进行充填。通过自研的大型全尺寸水平井度砾石充填实验模拟系统，对所设计的多流道旁通筛管进行了性能评价。结果表明，在无砂桥旁通管砾石充填实验中，旁通段充填效率为100.0%，连接输送玻璃管时出口处返液流量与输送玻璃管返液流量比为0.68 $∶$ 1，相比清水实验，旁通通道内的液体流量大幅提高；与有砂桥旁通管砾石充填实验相比，常规筛管充填效率提高62.5%，出口处返液流量与输送玻璃管返液流量比为1.60 $∶$ 1。实验证明，新型筛管的旁通性能和输送性能良好，砾石充填效率高。

关键词: 多流道旁通筛管, 砾石充填, 亏空段, 输送能力, 旁通性能

CLC Number:

TE358

Zongtong Man, Huan Zhou, Mingyue Pang, Yanbing Dong, Shenghong Wang, Puli Cai. Experimental of Performance Evaluation of Multi Channel Bypass Screen[J]. Journal of Petrochemical Universities, 2022, 35(2): 15-21.

满宗通, 周欢, 庞明越, 董严冰, 王圣虹, 蔡普利. 多流道旁通筛管性能实验评价[J]. 石油化工高等学校学报, 2022, 35(2): 15-21.

Figures/Tables 14

Fig.1 Schematic diagram of bypass pipe and conveying pipe

Fig.2 Schematic diagram of bypass pipe assembly

Fig.3 Multi channel bypass screen

Fig.4 Integral test equipment of sandless bridge

Fig.5 Integral test equipment of sand bridge

Fig.6 The actual site of the performance evaluation experiment of sand bridge

Table 1 Flow and pressure of unconnected glass tube pure water test

排量/（m³ $⋅$ min^-1）	流量/（m³ $⋅$ min^-1）		压力/kPa
排量/（m³ $⋅$ min^-1）	注入口	旁通管输出	注入口	远端旁通管	近端旁通管
0.2	0.175	0.173	22.491	9.496	19.500
0.4	0.397	0.373	22.989	21.992	26.990
0.6	0.590	0.575	26.997	16.994	26.983
0.8	0.876	0.844	34.986	8.497	32.986
1.0	1.072	1.039	36.486	13.498	35.984
1.2	1.228	1.203	35.495	18.987	32.494
1.4	1.427	1.377	38.495	21.477	34.991
1.6	1.659	1.613	38.986	25.494	36.120
1.8	1.743	1.709	40.985	26.990	37.988
2.0	2.018	1.976	41.984	21.992	38.987

Table 1 Flow and pressure of unconnected glass tube pure water test

排量/（m³ $⋅$ min^-1）	流量/（m³ $⋅$ min^-1）		压力/kPa
排量/（m³ $⋅$ min^-1）	注入口	旁通管输出	注入口	远端旁通管	近端旁通管
0.2	0.175	0.173	22.491	9.496	19.500
0.4	0.397	0.373	22.989	21.992	26.990
0.6	0.590	0.575	26.997	16.994	26.983
0.8	0.876	0.844	34.986	8.497	32.986
1.0	1.072	1.039	36.486	13.498	35.984
1.2	1.228	1.203	35.495	18.987	32.494
1.4	1.427	1.377	38.495	21.477	34.991
1.6	1.659	1.613	38.986	25.494	36.120
1.8	1.743	1.709	40.985	26.990	37.988
2.0	2.018	1.976	41.984	21.992	38.987

Table 2 Flow and pressure of connected glass tube pure water test

排量/ （m³ $⋅$ min^-1）	流量/（m³ $⋅$ min^-1）				压力/kPa
排量/ （m³ $⋅$ min^-1）	注入口	旁通管输出	玻璃管注入	玻璃管输出	注入口	远端旁通管	近端旁通管	玻璃管
0.2	0.211	0.189	0.017	0.017	17.993	13.984	16.994	10.993
0.4	0.478	0.417	0.036	0.035	20.992	18.497	20.984	12.499
0.6	0.590	0.543	0.053	0.045	25.989	24.487	26.494	19.993
0.8	0.877	0.821	0.071	0.063	27.990	21.493	25.990	23.495
1.0	1.070	1.004	0.089	0.090	30.987	18.989	28.499	21.988
1.2	1.299	1.220	0.107	0.107	32.497	19.493	27.000	20.496
1.4	1.500	1.403	0.125	0.117	32.988	24.494	32.491	24.498
1.6	1.679	1.574	0.144	0.134	38.489	18.497	34.987	26.497
1.8	1.787	1.669	0.161	0.162	47.486	26.990	32.990	29.727
2.0	1.970	1.839	0.179	0.171	48.993	28.493	30.989	20.496

Table 2 Flow and pressure of connected glass tube pure water test

排量/ （m³ $⋅$ min^-1）	流量/（m³ $⋅$ min^-1）				压力/kPa
排量/ （m³ $⋅$ min^-1）	注入口	旁通管输出	玻璃管注入	玻璃管输出	注入口	远端旁通管	近端旁通管	玻璃管
0.2	0.211	0.189	0.017	0.017	17.993	13.984	16.994	10.993
0.4	0.478	0.417	0.036	0.035	20.992	18.497	20.984	12.499
0.6	0.590	0.543	0.053	0.045	25.989	24.487	26.494	19.993
0.8	0.877	0.821	0.071	0.063	27.990	21.493	25.990	23.495
1.0	1.070	1.004	0.089	0.090	30.987	18.989	28.499	21.988
1.2	1.299	1.220	0.107	0.107	32.497	19.493	27.000	20.496
1.4	1.500	1.403	0.125	0.117	32.988	24.494	32.491	24.498
1.6	1.679	1.574	0.144	0.134	38.489	18.497	34.987	26.497
1.8	1.787	1.669	0.161	0.162	47.486	26.990	32.990	29.727
2.0	1.970	1.839	0.179	0.171	48.993	28.493	30.989	20.496

Fig.7 Change of pressure and flow rate of unconnected glass tube with clean water carrying sand test

Fig.8 Change of pressure and flow rate of connected glass tube with clean water carrying sand test

Fig.9 Glass tube gravel packing process

Fig.10 Internal packing situation

Fig.11 Change of pressure and flow rate of the multi channel bypass screen with sand bridge in packing test

Fig.12 Filling situation of deficit section and nozzle packing

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