Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 1 - 50 out of 1,015

Document Document Title
WO/2019/173442A1
Supercritical carbon dioxide is directed into a wellbore to a specified depth. The supercritical carbon dioxide is directed at an inner surface of the wellbore at the specified depth. Scale is removed from the wall of the wellbore with t...  
WO/2019/169215A1
A method of treating an oil well or a gas well to restore production capacity. In certain embodiments, the method comprises mixing a coagulant, a surfactant, and water or production brine to produce a well treatment mixture; injecting th...  
WO/2019/165399A1
Systems and methods for drilling optimization of a subterranean well include securing a multifunction sub in line with a tubular string. A nozzle provides a fluid flow path from the central bore through a sidewall of the sub body, the no...  
WO/2019/159021A1
Device for the prevention of biofilm and sediment. (4) in borehole tubes (1) or distribution tubes for water, characterised in that ultrasonic waves are generated in the fluid (10) that flows through the borehole tube (1) or distribution...  
WO/2019/155074A1
Disclosed herein is a downhole cleaning apparatus and a method of cleaning a wellbore. The downhole cleaning apparatus has a body and a cleaning element coupled to the body. The cleaning element is selectively moveable in relation to the...  
WO/2019/151895A1
The invention relates to methods for restoring well productivity and to devices for cleaning downhole mesh filters without disassembling water lifting equipment. Well productivity is restored and maintained using an acoustic method based...  
WO/2019/078728A3
A system and method of cleaning an annular area in a well (2), comprising: - a first pipe body (4) and a surrounding second pipe body (6); - a first annulus (8) containing a clean fluid (10), and a surrounding second annulus (12) contain...  
WO/2019/139664A1
A pressure rated well annulus fluid expansion storage device that is capable of managing pressure variation within a well annulus by removing or adding fluid to the well annulus. The well annulus fluid expansion storage device includes a...  
WO/2019/097411A3
A method of chemically changing extra-heavy/heavy crude oil into lighter crude oil and incrustation deposits in the down well casing's perforation using a chemical formulation under the following condition: 1) a working solution comprisi...  
WO/2019/120261A1
An experimental device and method for comprehensive systemwide monitoring of solids and evaluating declogging effectiveness in a pipeline. The device comprises a complex multiphase flow circulation system, a solids detection system (11),...  
WO/2019/122859A1
A rigless method for abandoning a well in which the production tubing (7) and control lines (15) are left in place. The production tubing (7) is perforated at a zone of interest at any position in the well. A settable composition (21) wh...  
WO/2019/112706A1
Cleanout tools and related methods of operation. At least some of the example embodiments are cleanout tools including a tool body that defines an internal annular channel, a joiner coupled to the tool body, a sleeve telescoped within th...  
WO/2019/113488A1
A tool system (1) comprises a crawler (10), one or more tool interfaces (30,31), one or more tools (40) operatively in communication with at least one the tool interface and adapted to perform a predetermined function in an interior (101...  
WO/2019/112441A1
It is described a downhole tool string (1) forming a free end portion (101) for performing an operation in a well having a well fluid (10), the downhole tool string (1) comprising towards the free end portion (101): - a motor (6) for del...  
WO/2019/113147A1
A hydraulic fracturing system for fracturing a subterranean formation is described according to various embodiments. In an embodiment, the system can include a multi-plunger hydraulic fracturing pump (300) fluidly connected to a well ass...  
WO/2019/104322A1
A running tool coupled to a running string and for operational use in a well casing. The running tool having a collapsed and expanded state, a tubular positioned around the centralizer to hold the centralizer in the collapsed state, a re...  
WO/2019/104007A1
The invention relates to the cleaning of a wellbore including a reservoir liner 3 and an upper portion 2 of the wellbore, by running in only one string into the wellbore and performing a reservoir liner cementing operation, displacing th...  
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/2018/222958A3
Materials and methods for protecting electric cables and connectors from corrosive atmospheres and chemicals, particularly in oil wells, are provided herein.  
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/2018/222958A2
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/2017/106685A8
Provided herein are methods of drawing out oils and/or fats (e.g., hydrocarbons) from a solid material (such as, e.g., metal or rock, e.g., a hydrocarbon bearing geologic formation). The methods comprise fumigating the solid material wit...  
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 ...  

Matches 1 - 50 out of 1,015