CN203271701U - 洗井不压油层管柱 - Google Patents

洗井不压油层管柱 Download PDF

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Publication number
CN203271701U
CN203271701U CN201320321567XU CN201320321567U CN203271701U CN 203271701 U CN203271701 U CN 203271701U CN 201320321567X U CN201320321567X U CN 201320321567XU CN 201320321567 U CN201320321567 U CN 201320321567U CN 203271701 U CN203271701 U CN 203271701U
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short circuit
hollow short
layer during
tubular column
oil
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赵芙蕾
赵景原
曹景萍
周亚洲
张琨
曹睿
曲蕾
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Northeast Petroleum University
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赵芙蕾
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Abstract

本实用新型涉及一种洗井不压油层管柱。该洗井不压油层管柱包括空心短接(4),空心短接(4)上端螺纹连接高强筛管(1),高强筛管(1)下方的空心短接(4)外壁固定有环锥形皮碗(3),环锥形皮碗(3)的喇叭口朝上,欲清洗层段(5)下方的空心短接(4)内设有阀座(7),阀座(7)上方设有阀球(6),空心短接(4)的末端连接有筛管(8)。该洗井不压油层管柱与地层隔离,对地层不产生污染,节约能源和提高油井有效时率,提高油井产量。

Description

洗井不压油层管柱
技术领域
 本实用新型涉及油田井下大修井作业领域,属于一种油井里的洗井不压油层管柱。
背景技术
在油田采油生产过程中,为了保证油井的正常生产,需要掺水洗井;在抽油泵卡泵时,需要洗井处理;油井作业时,为了防止井喷需要压井等等,都要向地层打水打液。然而由于抽油井生产时近井地层压力低,因此热洗时必然要有相当数量的热洗水灌入油层,这样地面注入的液体特别是水的浸入,给油层带来污染,渗透率大大降低,少则油井几十小时才出油,多则几个月出油,给油田开发带来几乎不可挽回的破坏性损失,浪费能源和降低油井有效时率,影响油井产量。特别是对于低渗透油田和低产油井,洗井水进入油层后还会对油层造成污染,降低油井产油能力。
发明内容
本实用新型所要解决的技术问题是针对背景技术中存的问题,而提供一种洗井不压油层管柱,该洗井不压油层管柱与地层隔离,对地层不产生污染,节约能源和提高油井有效时率,提高油井产量。
本实用新型解决其问题可通过如下技术方案来达到:洗井不压油层管柱,包括空心短接,空心短接上端螺纹连接高强筛管,高强筛管下方的空心短接外壁固定有环锥形皮碗,环锥形皮碗的喇叭口朝上,欲清洗层段下方的空心短接内设有阀座,阀座上方设有阀球,空心短接的末端连接有筛管。
本实用新型与背景技术相比具有如下有益效果:本装置是针对清洗层段而设计的专用循环通道,与之下的其它层段不涉及,所以节约用水,清洗效果好。由于对清洗层段形成专用循环通道,与地层隔离,因而对地层不产生污染。节约能源和提高油井有效时率,提高油井产量。
附图说明
附图1是本实用新型的结构示意图。
1-高强筛管,2-套管,3-环锥形皮碗,4-空心短接,5-欲清洗层段,6-阀球,7-阀座,8-筛管。
具体实施方式
下面结合附图和具体实施例将对本实用新型作进一步说明:
由图1所示,该洗井不压油层管柱包括空心短接4,空心短接4上端螺纹连接高强筛管1,高强筛管1与油管接箍相连,高强筛管1下方的空心短接4外壁固定有环锥形皮碗3,环锥形皮碗3的喇叭口朝上,空心短接4外壁与环锥形皮碗3对应处设有环形槽,环锥形皮碗3部分位于此环形槽与空心短接4固定为一体,环锥形皮碗3位于欲清洗层段5上方,欲清洗层段5下方的空心短接4内设有阀座7,阀座7上方设有阀球6,空心短接4的末端连接有筛管8。
该洗井不压油层管柱随抽油管住一同下井,使得环锥形皮碗3置于井筒内油层顶界面的上部。生产时油流在一定压差下顶阀球6,通过空心短接4及其上的高强筛管1后进入抽油泵;洗井时,阀球6坐在阀座7上关闭产液通道,环锥形皮碗3的外壁贴在套管2的内壁上封闭油套空间将井筒内油层和洗液隔开,洗液将通过高强筛管1进入到抽油泵,然后,从油管进入回油管线,排出。

Claims (1)

1. 一种洗井不压油层管柱,包括空心短接(4),其特征在于:空心短接(4)上端螺纹连接高强筛管(1),高强筛管(1)下方的空心短接(4)外壁固定有环锥形皮碗(3),环锥形皮碗(3)的喇叭口朝上,欲清洗层段(5)下方的空心短接(4)内设有阀座(7),阀座(7)上方设有阀球(6),空心短接(4)的末端连接有筛管(8)。
CN201320321567XU 2013-06-05 2013-06-05 洗井不压油层管柱 Expired - Fee Related CN203271701U (zh)

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Address after: 163000 No. 199, development road, hi tech Industrial Development Zone, Heilongjiang, Daqing

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