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The first double-layer casing window opening side well in Henan Oilfield opened the window successfully

 Last Update: 2021-08-07
 Source: Internet
 Author: User

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Well ShuangJ210C1 successfully completed the windowing operation, laying a foundation for our oilfield in double-casing windowing and sidetracking technology, expanding the range of well selection for casing windowing and sidetracking technology, which is conducive to windowing and sidetracking through old wells.
Technology further taps the potential of remaining oil in old areas
.

Double-layer casing window sidetracking needs to drill through two layers of casing in order to enter the formation
.

Compared with single-layer casing fenestration sidetracking, double-layer casing fenestration sidetracking has higher requirements on the strength of sidetracking tools, greater risk of on-site construction, and longer window-opening period

In the process of opening windows, jamming and slip milling cones are prone to occur.
In severe cases, window opening operations may fail
.

Prior to this, our oilfield has not implemented the double-casing window sidetracking technology, and other domestic oilfields have less experience to learn from

In view of the above technical difficulties, the drilling engineers and technicians of the Academy of Engineering combined with the actual drilling data of old wells on the one hand, optimized the drilling trajectory by optimizing the window tools and side drilling points, and minimized the construction risk
.

On the other hand, by consulting the data and drawing on the experience of other domestic oilfields in the double casing sidetracking technology, the window opening measures have been refined

"In the past, we had to give up when we encountered a potential well that needed to drill through two layers of casing in the process of joint well selection with geologists
.

The double casing of this well was successfully opened .

(Qiao Qingfang Li Feipeng)

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