Sand washing drilling and milling integrated device for workover operations in oil field

A technology for sand washing and well repairing, which is applied in the direction of wellbore/well valve devices, drill bits, drilling equipment, etc., which can solve the problems of poor sand washing effect and inability to perform reverse circulation sand washing, so as to reduce construction operation costs and speed up The effect of construction progress

Pending Publication Date: 2020-09-25
鞍山宏景石油机械有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that the general drilling and milling tool string has a strong rotation function during positive circulation, and can drill and break the condensed sand cap, but the sand washing effect is poor, and reverse circulation sand washing cannot be performed.

Method used

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  • Sand washing drilling and milling integrated device for workover operations in oil field
  • Sand washing drilling and milling integrated device for workover operations in oil field
  • Sand washing drilling and milling integrated device for workover operations in oil field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Such as Figure 1-6 As shown, a sand washing, drilling and milling integrated device for oil field workover operations, including an upper support body assembly 1, two sets of turbine assemblies 3, a lower support body assembly 4, a connecting cylinder 2 and a sand washing drill bit 5, The upper support body assembly 1, two sets of turbine assemblies 3 and the lower support body assembly 4 are sequentially connected through a plurality of connecting cylinders 2 to form a whole;

[0022] The upper support body assembly 1 includes an upper joint 6, an upper outer cylinder 8, a lower outer cylinder 14, a connector 11, a central pipe 7, a slide valve cover 12, an insertion head 17, a bearing group, and a slide valve One 15, spring one 16 and steel ball 13, the upper joint 6 is fixedly installed on the front end of the upper outer cylinder one 8, and the rear end of the upper outer cylinder one 8 is fixedly connected with the lower outer cylinder one 14 through the connector...

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Abstract

The invention relates to an oil well matching device, in particular to a sand washing drilling and milling integrated device for workover operations in an oil field. According to the technical schemeof the invention, the sand washing drilling and milling integrated device for the workover operations in the oil field comprises an upper support body assembly, a turbine assembly(turbine assemblies),a lower support body assembly, multiple connecting cylinders and a sand washing drill bit; the turbine assembly is arranged by one or more; the upper support body assembly, the turbine assembly(turbine assemblies) and the lower support body assembly are sequentially connected into a whole by the multiple connecting cylinders; the upper support body assembly is connected with the lower end of a drill pipe or oil pipe; and the sand washing drill bit is installed at the lower end of the lower support body assembly. The sand washing drilling and milling integrated device for the workover operations in the oil field provided by the invention not only has rotary drilling and milling functions of a turbodrill, but also can realize two functions of direct circulation sand washing and reverse circulation sand washing; and one-time pipe string construction operation can complete sand washing drilling and milling operations of an oil well, thereby speeding up the construction progress, and reducing the construction operation cost.

Description

technical field [0001] The invention relates to an oil well supporting device, in particular to an integrated sand washing, drilling and milling device for oil field workover operations. Background technique [0002] At present, in the production of various oil fields, many production oil wells will cause sand at the bottom of the oil well due to sand production in the oil layer during the production process, or various production stimulation measures (such as fracturing measures, sand control measures, acidizing measures) and so on. No matter what the reason is, the sand in the oil well or the sand at the bottom of the well will affect the normal production of the oil well. Therefore, the sand washing operation has always been an important part of the oil field workover and pump inspection operation. Generally, for conventional sand washing operations, the minor repair operation team can complete the sand washing operation in the next trip of the sand washing string. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B21/00E21B10/60E21B29/00E21B34/14
CPCE21B10/602E21B21/00E21B29/00E21B34/14
Inventor 刘宇航刘伟杨浩平孙新杰刘利李清伟董小斌乐拥军孙俊王伟任丹邱占武刘继海盛宗刚李业勋刘怀邹运童启金朱世伟刘明朱莎庄娜董庆邓春光冀凯朱延鹏王世伟栗刚丁一铭黄立新
Owner 鞍山宏景石油机械有限公司
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