GB2009929A - Borehole clinometers - Google Patents
Borehole clinometersInfo
- Publication number
- GB2009929A GB2009929A GB7839468A GB7839468A GB2009929A GB 2009929 A GB2009929 A GB 2009929A GB 7839468 A GB7839468 A GB 7839468A GB 7839468 A GB7839468 A GB 7839468A GB 2009929 A GB2009929 A GB 2009929A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pendulum
- link
- engagement
- angle
- drill string
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
- E21B47/0236—Determining slope or direction of the borehole, e.g. using geomagnetism using a pendulum
Abstract
Apparatus for measuring the angular deviation from the vertical of the end of the drill string includes a housing adapted for insertion in the drill string, a pendulum 24 pivotally mounted in the housing and capable of swinging through large angles, and a substantially perfectly balanced link 25 pivoted at the same point as the pendulum and normally coaxially aligned with the end of the drill string, Figure 5, by spring-engagement of its end with a seat 110. A pawl 70 on the link 25 can be brought into engagement with notches 97 on the pendulum to couple the pendulum and link together, Figure 6, the pendulum being displaced by an angle B as the notch is brought into alignment with the pawl; the link is then released from the seat 110, the pendulum swings back through angle B to a vertical position taking the link with it, the angle being measured by engagement of a hook 76 on the link with a stepped ring 130. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84439877A | 1977-10-21 | 1977-10-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2009929A true GB2009929A (en) | 1979-06-20 |
| GB2009929B GB2009929B (en) | 1982-05-06 |
Family
ID=25292624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7839468A Expired GB2009929B (en) | 1977-10-21 | 1978-10-05 | Wide angle inclinometer |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5474461A (en) |
| AR (1) | AR225602A1 (en) |
| CA (1) | CA1127833A (en) |
| DE (1) | DE2844765A1 (en) |
| FR (1) | FR2406805A1 (en) |
| GB (1) | GB2009929B (en) |
| IT (1) | IT1106206B (en) |
| NL (1) | NL7810501A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242285A (en) * | 2019-05-21 | 2019-09-17 | 自贡中兴耐磨新材料有限公司 | A kind of mechanical inclination measurement system based on circulation of drilling fluid |
| CN114810039A (en) * | 2022-05-12 | 2022-07-29 | 中国地质大学（北京） | Mud pulse signal generating device and inclinometer |
| CN116448065A (en) * | 2023-06-09 | 2023-07-18 | 山东钰镪地质资源勘查开发有限责任公司 | Ground slope metering survey device for territorial space planning |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3176407A (en) * | 1960-03-11 | 1965-04-06 | Varney Eng | Drift indicator |
| US3466755A (en) * | 1967-03-22 | 1969-09-16 | Byron Jackson Inc | Mainspring force transfer means for signalling drift indicator |
-
1978
- 1978-10-05 GB GB7839468A patent/GB2009929B/en not_active Expired
- 1978-10-13 DE DE19782844765 patent/DE2844765A1/en not_active Withdrawn
- 1978-10-19 AR AR274154A patent/AR225602A1/en active
- 1978-10-20 NL NL7810501A patent/NL7810501A/en not_active Application Discontinuation
- 1978-10-20 IT IT51588/78A patent/IT1106206B/en active
- 1978-10-20 CA CA313,834A patent/CA1127833A/en not_active Expired
- 1978-10-20 FR FR7829962A patent/FR2406805A1/en active Granted
- 1978-10-21 JP JP12994978A patent/JPS5474461A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242285A (en) * | 2019-05-21 | 2019-09-17 | 自贡中兴耐磨新材料有限公司 | A kind of mechanical inclination measurement system based on circulation of drilling fluid |
| CN114810039A (en) * | 2022-05-12 | 2022-07-29 | 中国地质大学（北京） | Mud pulse signal generating device and inclinometer |
| CN116448065A (en) * | 2023-06-09 | 2023-07-18 | 山东钰镪地质资源勘查开发有限责任公司 | Ground slope metering survey device for territorial space planning |
| CN116448065B (en) * | 2023-06-09 | 2023-08-25 | 山东钰镪地质资源勘查开发有限责任公司 | Ground slope metering survey device for territorial space planning |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2406805A1 (en) | 1979-05-18 |
| CA1127833A (en) | 1982-07-20 |
| AR225602A1 (en) | 1982-04-15 |
| IT1106206B (en) | 1985-11-11 |
| JPS5474461A (en) | 1979-06-14 |
| DE2844765A1 (en) | 1979-04-26 |
| IT7851588A0 (en) | 1978-10-20 |
| GB2009929B (en) | 1982-05-06 |
| FR2406805B1 (en) | 1982-03-19 |
| NL7810501A (en) | 1979-04-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |