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Matches 1 - 50 out of 997

Document Document Title
WO/2019/099990A1
A reverse circulation debris cleanup tool has a pressure control valve that closes up a passage through the body based on a sensed well condition to help pressure control the well when rams close around the tool to isolate the surroundin...  
WO/2019/097259A1
Some examples of the present disclosure relate to a method for washing an annulus that at least partially surrounds a casing in a well. The method comprises locating a tool inside a wellbore casing, and flowing a washing fluid from an in...  
WO/2019/089272A1
A chemical injection valve can include a valve stem reciprocably disposed relative to a primary seal, and a variable flow restrictor upstream of the primary seal relative to a direction of flow through the chemical injection valve. The v...  
WO/2019/074818A1
A gun cleaning apparatus includes a central member and a plurality of disc mandrels. The central member passes through a hole in each of the disc mandrels. The plurality of disc mandrels is stacked adjacent to one another on the central ...  
WO/2019/070653A1
The present disclosure provides methods for degrading filter cake and filter cake removal, and compositions for removing filter cake from a subterranean borehole. The methods involve contacting the filter cake with a composition containi...  
WO/2019/068378A1
A downhole mud filter (100) comprising a tubular member (1) connectable to the drill string used to prevent debris-laden fluid from entering sensitive BHA tools and components further downhole relative to the mud filter. A tubular member...  
WO/2019/036658A8
Compositions comprising non-halogenated solvents for use in various aspects of a life cycle of an oil and/or gas well, and related methods, are provided. In some embodiments, the composition comprises a solvent blend and one or more surf...  
WO/2019/071086A1
Embodiments include a method for monitoring a fracturing operation that includes positioning a pump (50) at a well site (12) where fracturing operations are being conducted. The method also includes arranging one or more sensors (34, 36)...  
WO/2019/053464A1
A downhole borehole cleaning apparatus (10) for recirculating drill cuttings contained in a downhole borehole is provided and has a body (10) having an outer surface for contacting downhole fluid containing said drill cuttings, the downh...  
WO/2019/041023A1
Sulfate scales, including barium, calcium, strontium, and radium sulfates, are known for being difficult to remove. Mineral acids are typically ineffective and the acid forms of chelating agents have limited efficacy. Specific salts of e...  
WO/2019/042699A1
The present invention provides a milling tool (1) for a wellbore, comprising a milling section (2) and a metal cuttings removal section (3), the milling section (2) comprises radially arranged milling elements (4); and the metal cuttings...  
WO/2019/036658A1
Compositions comprising non-halogenated solvents for use in various aspects of a life cycle of an oil and/or gas well, and related methods, are provided. In some embodiments, the composition comprises a solvent blend and one or more surf...  
WO/2019/032149A1
The present disclosure relates to a method and apparatus for removing debris from a wellbore, comprising providing a surface pump for supplying a fluid stream, a work string fluidly connected to the surface pump for passing the fluid str...  
WO/2018/223184A1
The invention relates to a mobile platform and a method for dewatering a blast hole and for deliver'ng a bulk explosive thereto in a single pass. The platform includes a dewater'ng apparatus for removing water from a blast hole and a sto...  
WO/2018/224819A1
A method and apparatus for the combined cleaning and plugging of an annulus in a well across a longitudinal section of the well were the annulus is located outside a conduit in the well. The conduit is perforated over the longitudinal se...  
WO/2018/226237A1
A casing scraper can include extendable scraper elements, and an actuator that extends the scraper elements after the actuator retracts the scraper elements. The actuator extends the scraper elements and retracts the scraper elements aft...  
WO/2018/222958A3
Materials and methods for protecting electric cables and connectors from corrosive atmospheres and chemicals, particularly in oil wells, are provided herein.  
WO/2018/222958A2
Materials and methods for protecting electric cables and connectors from corrosive atmospheres and chemicals, particularly in oil wells, are provided herein.  
WO/2018/200287A1
A system for cleaning a wellbore can include a bottom hole assembly that is designed to be run downhole into a wellbore after the wellbore has been drilled and before the wellbore has been cleaned. A control sub-assembly is mounted on an...  
WO/2018/196029A1
A solid antiscalant agent and a preparation method therefor. The solid antiscalant agent comprises a main antiscalant agent and a consolidating agent, the main antiscalant agent and the consolidating agent being in a ratio of 1:1. The ma...  
WO/2018/200321A1
System and methods are described that help to inhibit the formation of paraffin or wax within an oil well or pumping mechanism. Magnets can be integrated into a rod within the well tubing. The tubing can comprise metal portions such as b...  
WO/2018/191292A1
A movable sleeve is actuated to cover eductor outlet ports in the event of loss of through flow. The eductor reduces pressure in the tool on one side of the sleeve as compared to hydrostatic on another side of the sleeve so that the slee...  
WO/2018/182453A1
The group of inventions relates to the oil and gas production industry, and more particularly to cleaning the near-wellbore region of a horizontal well and also existing filters, as well as to stimulating oil production. The present meth...  
WO/2018/175975A1
Described herein are coated lift plungers, which have improved hardness, durability, and corrosion resistance, as well as methods of making, reworking, and using the same.  
WO/2018/175862A1
Mitigating corrosion and surface scale formation in a sour gas well includes providing an oil-based liquid to a sour gas well having carbon steel tubing (112) with iron sulfide on a surface of the carbon steel tubing (112), contacting th...  
WO/2018/170468A1
An electric submersible pump (ESP) is coupled with a spaced apart debris removal assembly that is independently supported from a retrievable packer. The debris removal assembly is modular and retains the captured debris for subsequent re...  
WO/2018/162891A1
A method for inhibiting the formation or agglomeration of gas hydrates in a system, said method comprising adding to the system a compound of formula (I) or a zwitterionic form thereof wherein R1 is a group comprising 4 to 28 carbon atom...  
WO/2018/157144A1
Apparatus and methods for penetrating a downhole target within a wellbore include providing a body with a longitudinal axis, a first end, and a second end into a wellbore, the body having a nozzle at the first end. The nozzle is adapted ...  
WO/2018/137737A1
The aim of the invention is to devise a device and an associated method for reliably removing at low cost ferric or other incrustations, deposits and biofilms present in the systems parts of existing open fluid systems such as well syste...  
WO/2018/117854A1
The invention relates to a method of cleaning a production tubing (10) in a producing petroleum well. The method comprises steps of: i) providing a collection tool (100) that configured for both selectively collecting debris (90) while r...  
WO/2018/111837A1
Systems and methods for decreasing a size of debris entering an electrical submersible pump assembly in a subterranean well with a debris handling assembly include a handler housing with an inner bore and a housing cutting profile locate...  
WO/2018/106121A1
An apparatus (1) for collecting debris from a wellbore and a method for collecting and bringing debris out from a well, the apparatus (1) comprises a pipe (3) having a first end portion (5) and a second end portion (7) for connecting to ...  
WO/2018/106835A1
A skid-mounted chemical and hydrate remediation system including a subsea separator is described for use in the event of a hydrate plug with chemical injection. This system comprises a manifold which communicates between a subsea pipelin...  
WO/2018/101929A1
The present disclosure provides a composition for use in drilling fluids comprising an adsorbing substrate that is loaded with a hydrophobic liquid. In one aspect, the hydrophobic liquid comprises a base oil, an emulsifier, a rheology mo...  
WO/2018/093299A1
The group of inventions relates to the oil-and-gas extraction industry, in particular to equipment for removing deposits of asphaltenes, resins, paraffins, hydrates, calcium salts, etc. from tubing strings of oil and gas wells without ex...  
WO/2018/094119A1
A method of preventive well maintenance with pumping equipment in the well for well rehabilitation using CO2 with varying lengths of producing intervals utilizing varying methods to deliver cleaning energy and varying porosity of aquifer...  
WO/2018/067182A1
A system and method for deployment of an isolation seal assembly wherein an isolation seal assembly is releasably attached to a reverse circulation debris removal tool. The system includes a debris removal tool having a head with an elon...  
WO/2018/064115A1
A liquid injection system includes a motive fluid pump (20) that is adapted to supply a pressurized motive fluid (23, 25), at least one source (40) of a liquid (41), and at least one liquid injection pump (22) that is adapted to receive ...  
WO/2018/063006A1
A method for plugging a subterranean well (6), comprising the steps: running a perforating tool (1) into the subterranean well and positioning the perforating 5 tool in a well section (L) to be plugged; operating the perforating tool to ...  
WO/2018/057418A3
A method of automatically washing a well casing of a progressing cavity (PC) pump system. The method includes disabling, via a controller, a normal speed control of a progressing cavity (PC) pump of the PC pump system, and closing, via t...  
WO/2018/057960A1
A downhole motor-pump assembly disposed within a tubular string includes a rotor and a stator. The rotor has a first rotor portion and a second rotor portion. The first rotor portion has a first geometrical shape and the second rotor por...  
WO/2018/057418A2
A method of automatically washing a well casing of a progressing cavity (PC) pump system. The method includes disabling, via a controller, a normal speed control of a progressing cavity (PC) pump of the PC pump system, and closing, via t...  
WO/2018/057417A1
An automated wash system for use with a progressing cavity (PC) pump system. The automated wash system includes a wash fluid source and a wash valve. The wash valve is in fluid communication with the wash fluid source and an annulus of a...  
WO/2018/052857A1
A downhole tool for sand fall-back prevention can include a sand bridge inducer configured to be mounted in a flow path through a housing in a downhole tool. The sand bridge inducer can define a longitudinal axis and having a main openin...  
WO/2018/026370A1
A wellbore unloading arrangement for removal of debris from a wellbore. The unloading arrangement includes an unloading bottom hole assembly which can inject both nitrogen and a liquid as well as draw debris into a flowbore for transmiss...  
WO/2018/021992A1
Disclosed is flow reversal system (100) that comprises a single direction flow device (101) adapted for receiving a fluid and first (120), second (122), third (124) and fourth (126) binary valves. The system is adapted to be configured i...  
WO/2018/004390A1
The invention relates to the field of oil production equipment and is designed to prevent the upper stages of a centrifugal submersible pump clogging up with mechanical impurities, which are deposited from the oil well tubing when the pu...  
WO/2018/005598A1
A debris removal tool for removal of metallic debris from within a wellbore. The debris removal tool includes a housing defining a central bore and a plurality of magnetic members retained within the central bore and axially moveable the...  
WO/2017/203288A1
A downhole apparatus and method for expelling fluid which comprises a container defining a void which is separated into three separate sections by a floating piston and control member, each having a dynamic seal. A portion of the contain...  
WO/2017/203285A1
A method to manipulate a well comprising providing an apparatus (60) in a well (14) below a packer (22) or other annular sealing device, the apparatus comprising a container (68) having a volume of gas which is sealed at the surface and ...  

Matches 1 - 50 out of 997