子分类：
- E21B29/002： .{用沿着管子周围转动的切割器切割管子,例如,研磨}
- E21B29/02： .使用炸药或热力或化学方法(通过爆炸释放粘住的物品入E21B31/002;通过爆炸破坏井眼或井中的物体入E21B31/16)
- E21B29/04： .切割钢丝绳或类似物(E21B29/02优先)
- E21B29/06： .切割窗口,例如,用于造斜器操作的定向窗口切割器(E21B29/005和E21B29/08优先;造斜器入E21B7/061)
- E21B29/08： .切割管道或使管道变形来控制液体流动(剪切型防喷器入E21B33/06)
- E21B29/10： .修复井筒,例如,调直
- E21B29/12： .专门适用于水下安装的(E21B29/08优先)
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 221 | SUBSEA SLANTED WELLHEAD SYSTEM AND BOP SYSTEM WITH DUAL INJECTOR HEAD UNITS | US15524261 | 2015-11-10 | US20170335649A1 | 2017-11-23 | Henning Hansen |
| A wellbore intervention tool conveyance system includes an upper pipe injector disposed in a pressure tight housing. The upper injector has a seal element engageable with a wellbore intervention tool and disposed below the injector. The upper housing has a coupling at a lower longitudinal end. A lower pipe injector is disposed in a pressure tight housing, the lower housing has well closure elements disposed above the lower pipe injector. The lower housing is configured to be coupled at a lower longitudinal end to a subsea wellhead. The lower housing is configured to be coupled at an upper longitudinal end to at least one of (i) a spacer spool disposed between the upper pipe injector housing and the lower pipe injector housing, and (ii) the lower longitudinal end of the upper pipe injector housing. | ||||||
| 222 | Behind pipe evaluation of cut and pull tension prediction in well abandonment and intervention operations | US14895039 | 2015-08-10 | US09822629B2 | 2017-11-21 | Fnu Suparman; Philip Edmund Fox; Gary James Frisch |
| Casing removal operations may utilize an analytical model to the estimate the total force to (1) break bonding between a cut casing and the annular materials contained between the cut casing and the surrounding borehole and (2) pull the cut casing upward through the borehole while taking into account frictional forces inside and outside the cut casing, shear forces, and the like. Such models may further predict the casing overpull and total tension needed to extract the cut casing from the borehole. Using these models in conjunction with the specifications of the casing retrieval equipment may allow for determining the cutting depth for producing the cut casing with higher accuracy than previously available. | ||||||
| 223 | Method For Recovering Tubular Structures From A Well And A Downhole Tool String | US15536489 | 2015-12-15 | US20170328160A1 | 2017-11-16 | Georges Emile Arnaly |
| This invention relates to a method for recovering a tubular structure (3) from a well (1), wherein a so-called free point is defined as the location where the tubular structure is stuck in the well. The method comprising providing a downhole tool string comprising a pipe-severing tool and an upper part of the downhole tool string; lowering the downhole tool string into the tubular structure to release the free pipe. Before the step of triggering the pipe-severing tool to sever the tubular structure, the method includes releasing the pipe-severing tool and subsequent withdrawing the upper part, of the downhole tool string away from the free point towards the surface over at least a predefined distance. The invention relates to a downhole tool string for use in such method. | ||||||
| 224 | Multi-Tool Analysis of Annuluses in Cased Holes | US15119369 | 2015-09-14 | US20170261638A1 | 2017-09-14 | Gordon L. Moake |
| A method for determining a material in an annulus between two objects disposed in a borehole includes positioning logging tools in the borehole, each of the logging tools being oriented at a different angle. The method also includes measuring a property of the material in the annulus using the logging tools and determining the material in the annulus based on the measured property. | ||||||
| 225 | Well casing perforator and apparatus | US14641804 | 2015-03-09 | US09759047B2 | 2017-09-12 | Benny Benson; Chadbourne Lovegren; Pete Terzo; Nick Fornalski; William Song |
| A multi-directional drill-type device that can be shuttled vertically through well casings of various diameters to add new perforations at the desired spacing and positions along the casings to optimize well performance is disclosed. The apparatus is especially suited to add perforations to well casings of existing vertical LFG extraction wells. The apparatus includes a motor in a housing that may be purged with inert gas and with an output shaft that rotates around a first axis. The motor output shaft drives plural drill assembly modules that have drill bits that rotate around an axis normal to the first axis and which reciprocate into and out of the apparatus. | ||||||
| 226 | Entry guide formation on a well liner hanger | US12954258 | 2010-11-24 | US09725992B2 | 2017-08-08 | Brock W. Watson; Daniel K. Moeller |
| A method of forming an entry guide at an end of a tubular string in a wellbore can include conveying a forming device into the wellbore, and deforming the end of the tubular string from a cylindrical shape to an outwardly widening shape with the forming device. A method of forming an entry guide at an end of an expanded liner hanger in a wellbore can include outwardly expanding the liner hanger, thereby sealingly securing a tubular string in the wellbore, and deforming the end of the liner hanger from a cylindrical shape to an outwardly widening shape with a forming device. | ||||||
| 227 | Radial conduit cutting system and method | US14469149 | 2014-08-26 | US09677365B2 | 2017-06-13 | Richard F. Tallini; Todd J. Watkins |
| What is presented is a combustible pellet for creating heated gas. The combustible pellet can be inserted into a cutting apparatus or a high power igniter or both. The combustible pellet is compacted to be resistant to mechanical damage, resistant to unintentional ignition, and free from a loose powdered form of combustible material when ignited in the cutting apparatus or the high power igniter.In certain instances, the combustible pellet is compacted to between 90 percent and 99 percent of its theoretical density. The combustible pellet may be capable of being transported separate from the cutting apparatus or the high power igniter or both. The combustible pellet may also be capable of being stored separate from the cutting apparatus or the high power igniter or both. The combustible pellet may comprise a circular cross-section and tubular length. The combustible pellet may comprise an axial hole. | ||||||
| 228 | Removal of casing slats by cutting casing collars | US14504468 | 2014-10-02 | US09670734B2 | 2017-06-06 | Jim B. Surjaatmadja; Leldon Mark Farabee; Jorn Tore Giskemo |
| Embodiments herein include a casing cutting tool comprising a top mandrel operatively coupled to a conveyance; a first retractable wedge operatively coupled to the top mandrel; a jetting tool operatively coupled to the retractable wedge, the retractable wedge thereby interposing the top mandrel and the jetting tool, wherein the jetting tool has one or more jetting nozzles arranged thereon; and a bottom terminal operatively coupled to the jetting tool, the jetting tool thereby interposing the retractable wedge and the bottom terminal. | ||||||
| 229 | High power laser decomissioning of multistring and damaged wells | US14105949 | 2013-12-13 | US09664012B2 | 2017-05-30 | Paul D. Deutch; Scott A. Marshall; Daryl L. Grubb; Ronald A. De Witt; Mark S. Zediker; Brian O. Faircloth |
| High power laser systems, high power laser tools, and methods of using these tools and systems for opening up damaged wells and for cutting, sectioning and removing structures objects, and materials, and in particular, for doing so in difficult to access locations and environments, such as offshore, underwater, or in hazardous environments, such as nuclear and chemical facilities. And, high power laser systems, high power laser tools, and methods of using these systems and tools for providing rock-to-rock plugs for decommissioning of wells. | ||||||
| 230 | Apparatus and method for isolating a section of a pipe riser bore in the course of riser renewal | US15198180 | 2016-06-30 | US09644448B2 | 2017-05-09 | Guy Berube; Graham T. Brown; Tom Blair |
| The isolation tool works at depth in the bore of a pipe whose upper end is to be severed and replaced. The tool isolates the lower pipe bore from the upper bore so that flammable downhole fluid is prevented from reaching a welding site along the pipe wall. The tool incorporates: means for establishing a pair of axially spaced apart annular seals engaging the pipe inner surface; means for venting downhole fluid to ground surface; and means for monitoring for seal leakage. The tool is primarily mechanical in nature. It finds use in connection with off-shore platform riser renewal operations. | ||||||
| 231 | DOWNHOLE DRILLING ASSEMBLY WITH CONCENTRIC ALIGNMENT FEATURE | US15334552 | 2016-10-26 | US20170114597A1 | 2017-04-27 | Josh Chevalier; Chris Bairrington |
| A concentric alignment device is provided that elevates the working face of a drill bit off of the inner wall of a casing or tubing to prevent premature wear of the working face of the drill bit. In horizontal drilling applications, the working face of a drill bit has a tendency to contact or rest on the inner wall of a casing or tubing, which negatively affects the working face of a drill bit. In some embodiments, one or more optional inserts are provided on the shank of a drill bit or on a centralizing sub such that the inserts contact the inner wall of a casing or tubing instead of the working face of the drill bit. In other embodiments, blade packages on a drill bit or sub contact the inner wall of a casing or tubing and also pump drilling fluid in a downhole direction. | ||||||
| 232 | Systems and methods of diverting fluids in a wellbore using destructible plugs | US13264948 | 2010-04-13 | US09624750B2 | 2017-04-18 | Pavlin B. Entchev; William A. Sorem; Zhihua Wang; David A. Baker; John K. Montgomery; Larry Mercer; Dennis H. Petrie |
| A bridge plug arrangement includes a plug having an upper end and a bottom end. The bridge plug arrangement also optionally includes a cylindrical seat. The bridge plug arrangement further includes a tubular member. The tubular member may be part of a casing string. The tubular member is configured to receive the plug and, when used, the seat. The plug and/or the seat may be fabricated from a frangible material. Also disclosed is a method for diverting fluids in a wellbore using the bridge plug arrangement. The method may include landing the plug onto the seat within the wellbore below a subsurface zone of interest. Treatment fluids are then injected into the wellbore, where they are diverted through perforations and into a formation. The plug and/or seat is then optionally broken into a plurality of pieces through use of a downward mechanical force. | ||||||
| 233 | Conditioning ferrous alloys into cracking susceptible and fragmentable elements for use in a well | US14875630 | 2015-10-05 | US09580983B2 | 2017-02-28 | Manuel Marya; Andrew T. Werner |
| A technique includes providing a tool to be deployed in a well to perform a downhole function. The downhole function requires a minimum structural integrity for an element of the tool. The technique includes forming at least part of the element from a ferrous alloy and charging the alloy with hydrogen cause the element to be more prone to cracking than before the hydrogen charging. | ||||||
| 234 | METHOD AND SYSTEM OF ANALYZING WELLS OF A MATURE FIELD | US15282226 | 2016-09-30 | US20170018037A1 | 2017-01-19 | Robert M. Hull; Sung Hyun Kim; Darrin S. Seulakhan; Michael L. Boothe |
| Analyzing wells of mature field. At least some of the illustrative embodiments are methods including: gathering data about a group of wells; determining a condition of each well; creating an initial prioritization; creating a secondary prioritization based on at least one criteria provided by the client and the initial prioritization; analyzing at least some of the wells selected based on priority of each well in the secondary prioritization; interfacing with a service providing entity; providing to the client a first recommendation regarding corrective action, the first recommendation without regard to the service providing entity's availability to perform services; providing to the client a second recommendation regarding corrective action, the second recommendation taking into account the service providing entity's availability of crews and equipment; and performing at least one corrective action on at least one well, the performing based from the first or second recommendations. | ||||||
| 235 | Completion Fluid for Reducing Friction Between Metal Surfaces | US15234737 | 2016-08-11 | US20160347984A1 | 2016-12-01 | Jerry W. Noles,, JR.; Alex J. Watts |
| A liquid mixture reduces the friction between two surfaces, at least one of which is moving with respect to the other such as tubing moving within the casing of an oil or gas well. The mixture includes an oil, a suspending agent, polymer particles and a surfactant. | ||||||
| 236 | Water pump pipe cut-off tool | US14021473 | 2013-09-09 | US09500059B1 | 2016-11-22 | Geryl W. Taylor; Dakota W. Taylor |
| A water pump pipe cutoff tool provides a means to cut and retrieve an existing original water pipe from within an existing well in such cases where a faulty submersible pump is trapped within said well. By cutting and removing the original water pipe, a new submersible pump can be installed into the well, thereby avoiding the expense of drilling a new well. | ||||||
| 237 | Opening a conduit cemented in a well | US14006727 | 2011-04-12 | US09488034B2 | 2016-11-08 | Joel David Shaw; Paul Robert Terry |
| A method of opening a conduit cemented in a subterranean well can include flowing a fluid through a passage in the well after the conduit is cemented in the well, and the conduit opening in response to the flow of the fluid through the passage. A well system can include a flow control device cemented in a wellbore, and a conduit positioned adjacent a passage of the flow control device, whereby the conduit opens in response to the passage being opened. | ||||||
| 238 | Wireline Tractor Comprising A Disc-Shaped Cutting Device for Perforating of A Tubing Wall and Method for Perforating a Tubing Wall | US15108622 | 2015-01-08 | US20160319618A1 | 2016-11-03 | Arne Motland |
| This invention relates to a wireline tractor (10) for use in a casing or tubing (4) in a well. The wireline tractor (10) includes at least one retractable wheel (14) for driving within the casing or tubing (4) and a rotatable disc-shaped cutting device (11) mounted on an actuator (13) that is coupled to the wireline tractor. The cutting device (11) and the actuator (13) are configured for pressing the cutting device (11) against a wall of the casing or tubing (4) and for cutting a perforation (100) in the wall of the casing or tubing (4), in operational use of the wireline tractor (10). The invention further relates to a method for perforating a casing or tubing (4) in a well. | ||||||
| 239 | METHODS AND COMPOSITIONS FOR USING TEMPORARY, SLOW DEGRADING, PARTICULATE AGENTS IN A SUBTERRANEAN FORMATION | US15187497 | 2016-06-20 | US20160298019A1 | 2016-10-13 | Amy Lyn Brooks; Raynard Rene Veldman; Bradley Leon Todd |
| Methods, fluids, and compositions are provided for treating subterranean formations. The fluids can be servicing or drilling fluids including a base fluid and a particulate agent or biocide precursor particulate agent. The particulate agent can seal flow paths in the subterranean formation and subsequently can be degraded to allow flow to resume. The particulate agent may be a reaction product of a urea containing compound and an aldehyde containing compound. An example of such a reaction product is a methylene urea. | ||||||
| 240 | Isolation devices having a nanolaminate of anode and cathode | US14269037 | 2014-05-02 | US09458692B2 | 2016-10-04 | Michael L. Fripp; Arthur Baker; Zachary R. Murphree; Zachary W. Walton |
| A wellbore isolation device comprising: a nanolaminate, wherein the nanolaminate comprises two or more layers of a first material and two or more layers of a second material, wherein the first material and the second material form a galvanic couple, and wherein the first material is the anode and the second material is the cathode of the galvanic couple. A method of removing the wellbore isolation device comprises: contacting or allowing the wellbore isolation device to come in contact with an electrolyte; and causing or allowing at least a portion of the two or more layers of the first material to dissolve. | ||||||
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