System and method to measure mud level of mud cap in a wellbore annulus
US-12173571-B2 · Dec 24, 2024 · US
Methods and systems for drilling
US8939233B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8939233-B2 |
| Application number | US-201213649434-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 11, 2012 |
| Priority date | Apr 12, 2010 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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A method of controlling a direction of a toolface of a bottom hole assembly for slide drilling, comprises a) synchronizing the toolface wherein synchronizing the toolface comprises determining a relationship between the rotational position of the down hole toolface with a rotational position at the surface of the formation for at least one point in time, b) stopping rotation of the drill string coupled to the bottom hole assembly, c) controlling torque at the surface of the drill string to control a rotational position of the toolface, and d) commencing a slide of the drill string.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of controlling a direction of a toolface of a bottom hole assembly for slide drilling, comprising: a) synchronizing the toolface wherein synchronizing the toolface comprises determining a relationship between the rotational position of the down hole toolface with a rotational position at the surface of the formation for at least one point in time; b) stopping rotation of the drill string coupled to the bottom hole assembly; c) controlling…
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Fixed Constructions · mapped topic
Fixed Constructions · mapped topic
Fixed Constructions · mapped topic
Fixed Constructions · mapped topic
Fixed Constructions · mapped topic
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- What does patent US8939233B2 cover?
- A method of controlling a direction of a toolface of a bottom hole assembly for slide drilling, comprises a) synchronizing the toolface wherein synchronizing the toolface comprises determining a relationship between the rotational position of the down hole toolface with a rotational position at the surface of the formation for at least one point in time, b) stopping rotation of the drill string…
- Who is the assignee on this patent?
- Shell Oil Co
- What technology area does this patent fall under?
- Primary CPC classification E21B21/08. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).