GB200202A - Improvements in well boring apparatus - Google Patents
Improvements in well boring apparatusInfo
- Publication number
- GB200202A GB200202A GB9991/22A GB999122A GB200202A GB 200202 A GB200202 A GB 200202A GB 9991/22 A GB9991/22 A GB 9991/22A GB 999122 A GB999122 A GB 999122A GB 200202 A GB200202 A GB 200202A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cutters
- bore
- mandrel
- spring
- carried
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 210000004907 gland Anatomy 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 abstract 1
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
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/325—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being shifted by a spring mechanism
Abstract
200,202. Brunt, P. April 7, 1922. Bore-hole apparatus. -In a well-boring tool comprising a body member containing a spring-pressed mandrel carrying expanding cutters, the body member is in two parts a, b, and the upper member a forms a closure for the bore g in the lower part b which contains the mandrel h. A shoulder f at the lower end of the bore carries a gland o supporting the spring i. The cutters p are carried by lugs q at the lower end of the mandrel; inclined surfaces r on the cutters co-operate with similar surfaces s on the body to force the cutters outwardly as the spring moves them upwardly relatively to the body. Ribs p<4> limit the outward movement of the cutters. Holes t in the cutters receive means for pulling the cutters downwardly to collapsed position to permit passage of the tool through a well casing. Lubricant is carried in the bore g. Flushing fluid passes through a branched passage f in the upper body part a to an annular groove b<1> and thence through lateral passages in the lower body part. The cutters shown in Figs. 2, 3 and 7 may be replaced by cutters u as shown in Fig. 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9991/22A GB200202A (en) | 1922-04-07 | 1922-04-07 | Improvements in well boring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9991/22A GB200202A (en) | 1922-04-07 | 1922-04-07 | Improvements in well boring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB200202A true GB200202A (en) | 1923-07-09 |
Family
ID=9882525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9991/22A Expired GB200202A (en) | 1922-04-07 | 1922-04-07 | Improvements in well boring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB200202A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206170A (en) * | 2013-04-18 | 2013-07-17 | 宁波市镇海欣泰机械厂 | Concrete body hole bottom reamer |
| CN106217661A (en) * | 2016-08-08 | 2016-12-14 | 浙江水利水电学院 | Rock-boring is made seam device and makes seam method |
-
1922
- 1922-04-07 GB GB9991/22A patent/GB200202A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206170A (en) * | 2013-04-18 | 2013-07-17 | 宁波市镇海欣泰机械厂 | Concrete body hole bottom reamer |
| CN106217661A (en) * | 2016-08-08 | 2016-12-14 | 浙江水利水电学院 | Rock-boring is made seam device and makes seam method |
| CN106217661B (en) * | 2016-08-08 | 2018-03-30 | 浙江水利水电学院 | Rock-boring makes seam device and makes seam method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2650664A (en) | Oil tool | |
| US2824378A (en) | Apparatus for determining the contour and position of obstructions in wells | |
| GB709365A (en) | Improvements in or relating to drill assemblies | |
| GB755082A (en) | Subsurface well tools | |
| GB200202A (en) | Improvements in well boring apparatus | |
| GB547065A (en) | Earth boring apparatus of the core drilling type | |
| GB716761A (en) | Improvements in or relating to drill assemblies | |
| GB881358A (en) | Retrievable drilling apparatus for bore holes | |
| US1859611A (en) | Drill seal | |
| US1711125A (en) | Sand tester | |
| GB497877A (en) | Expansible cutter tool | |
| GB570842A (en) | Improvements in or relating to means for removing debris from bore holes or wells | |
| US2448205A (en) | Water shutoff for oil wells | |
| GB337781A (en) | Improvements in fishing tools for use in well boring operations | |
| GB302900A (en) | Underreamer | |
| US1535234A (en) | Casing-ripping device | |
| GB295150A (en) | Improvements in or relating to underreamers for use in well drilling operations | |
| GB201807A (en) | Improvements in apparatus for drilling wells | |
| GB558659A (en) | Improvements in or relating to well drilling | |
| GB766242A (en) | Rotary expansible well drill bits | |
| GB114484A (en) | Improvements in Fishing Tools for use in Well Boring. | |
| GB219274A (en) | Tool for cutting and removing pipe from wells | |
| GB285316A (en) | Improvements in or relating to plugs for oil wells | |
| GB361961A (en) | Jar mechanism for use in well drilling operations | |
| GB206169A (en) | Improvements in or relating to jars for use in rotary well drilling apparatus |