一种用于岩屑环空回注的装置及其控制方法制造方法及图纸

本发明专利技术公开了一种岩屑环空回注系统，选用注水井作为回注井，中间的注水管线（７）与９－５／８”套管（８）之间形成内环空（９），９－５／８”套管（８）与１３－３／８”套管（１０）之间形成外环空（１１），其特点是在注水管线（７）的延长管（１）与内环空（９）的出口管线（６）之间安装注水管线隔离阀（２）、压力控制阀（３）、内环空隔离阀（４）、内环空压力表（５），用于海上油田钻井的岩屑回注作业技术，在１３－３／８”套管与９－５／８”套管之间的外环空进行岩屑回注时，调节压力控制阀的允许出口压力，对内环空进行加压，来保证岩屑回注浆液不到流入内环空，保护内环空空间，保护注水井的完整性。

Apparatus and method for controlling annular injection of cuttings

The invention discloses a cutting ring air injection system, the injection wells as reinjection wells, water injection pipeline in the middle (7) and 9 - 5 / 8 casing \(8) is formed between the inner space (9), 9 - 5 / 8\ casing (8) and 13 (3 / 8 \casing 10) is formed between the outer annulus (11), which is characterized in that the water injection pipeline (7) of the extension tube (1) and (9) the inner air outlet pipe (6) is arranged between the water injection pipeline isolation valve (2), a pressure control valve (3), the inner air isolation valve (4), inner ring air pressure gauge (5), for operation of offshore oilfield drilling cuttings re injection technology, between 13 - 3 / 8\ casing and 9 - 5 / 8 \casing outer annulus cuttings re injection, adjust the outlet pressure of the pressure control valve to allow the air and on the inner ring In order to ensure the integrity of the injection well, the grouting fluid of the cuttings is not allowed to flow into the inner ring, and the inner space of the inner ring is protected.

【技术实现步骤摘要】

【技术保护点】
１．一种用于岩屑环空回注的装置，选用注水井作为回注井，中间的注水管线（７）与９－５／８”套管（８）之间形成内环空（９），９－５／８”套管（８）与１３－３／８”套管（１０）之间形成外环空（１１），其特征在于在注水管线（７）的延长管（１）与内环空（９）的出口管线（６）之间安装注水管线隔离阀（２）、压力控制阀（３）、内环空隔离阀（４）、内环空压力表（５）。

【技术特征摘要】

【专利技术属性】
技术研发人员：邓连军，王坤晓，陈开军，
申请(专利权)人：烟台杰瑞石油开发有限公司，
类型：发明
国别省市：37[中国|山东]