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Matches 1 - 50 out of 5,036

Document Document Title
WO/2021/069694A1
The invention relates to variation of concentrations of abrasive particles (92) in a stream (90) of drilling fluid mixed with abrasive particles, passed as an abrasive jet through abrasive nozzle(s) of a drill bit (10) along rotations th...  
WO/2021/071686A1
A method of monitoring a well state with intermittent well state sampling includes determining a measured volume differential by measuring flow out of a wellbore, measuring flow into the wellbore, and calculating a difference between the...  
WO/2021/071526A1
A method of servicing a wellbore extending from a surface of the earth and penetrating a subterranean formation, including: removing water from an aqueous based wellbore servicing fluid by contacting the aqueous based wellbore servicing ...  
WO/2021/071525A1
A method for determining mud properties may comprise taking multi-frequency measurement data with a downhole tool, selecting an injector electrode from the one or more injector electrodes for the multi-frequency measurement data, selecti...  
WO/2021/071483A1
A method of determining wettability may include: measuring an electrical property of a drilling fluid; and correlating the electrical property to wettability.  
WO/2021/071509A1
Systems and methods using: a membrane unit to treat fluids recovered from an oil and gas well are provided. The membrane unit may include a membrane having a porous substrate at. least partially coated with graphene oxide, making the mem...  
WO/2021/068694A1
Provided is an accumulator group-type pressure compensation apparatus for managed pressure drilling; an electric flat valve (1), a check valve (2), an accumulator group (3), a flange sub (4), and a whole support base (5); the electric fl...  
WO/2021/071964A1
An LCM placement device for placement of an LCM onto a test bed in a test cell is provided. The LCM placement device minimizes or prevents damage and degradation of the test bed during placement of the LCM. The device (302) includes a fu...  
WO/2021/066827A1
Methods for using treatment fluids and additives that include xanthan gum and attapuigite, In one or more embodiments, the methods of the present disclosure include providing a treatment fluid comprising an aqueous base fluid, xanthan gu...  
WO/2021/013846A3
The invention relates to a drill head and to a method for producing a substantially vertical borehole in the ground, in particular for producing a shaft, said drill head comprising a body (11) which can be connected to a rotational drive...  
WO/2021/066811A1
A subterranean product extraction composition may include a borehole fluid that may include a thiamine based shale inhibitor active to inhibit reactivity of a formation shale to a base fluid of a borehole fluid. A method of extracting a ...  
WO/2021/066814A1
A method of drilling may include mixing, at the surface, a base fluid, a polyvalent cation reactive polymer, and a delayed source of polyvalent cation so as to form a treatment fluid; placing the treatment fluid in a subterranean formati...  
WO/2021/066836A1
Solid shale inhibitor additives and methods of using such additives to, for example, inhibit shale are provided, in some embodiments, such methods include providing an aqueous treatment fluid that includes an aqueous base fluid and a sol...  
WO/2021/066812A1
The effect of drilling fluids on particular subterranean environments can be analyzed to improve the formation of drilling fluids and additives such as lost circulation materials. A plug can be generated by a particle plugging apparatus ...  
WO/2021/062365A1
A method is provided for monitoring the occurrence of pressure anomalies due to FDI in near real time during a hydraulic fracturing operation carried out on an active well that is located near one or more passive monitoring wells. The me...  
WO/2021/061444A1
A production system and method of operating the production system. A fluid flows through a flow control device. The flow control device having an element that generates an acoustic signal indicative of a value of a parameter of the fluid...  
WO/2021/056093A1
A separator is provided for removing hydrocarbons and fluid from solids from a slurry. The separator includes a first separator tank for receiving a slurry of fluid and solids contaminated with hydrocarbons, said first separator tank com...  
WO/2021/061099A1
Characterizing the decay of the microstructure of a drilling fluid gel using a model based on two exponential functions. Based on the model, identify at least two components of the decay model comprising a fast decay component and a slow...  
WO/2021/061103A1
The present disclosure relates to a pulsed-power drilling system that includes downhole mixers for restoring optimal electrical properties in drilling fluid. The downhole mixer may include a housing having an uphole and downhole end, a c...  
WO/2021/061168A1
The present disclosure provides methods, compositions, and systems embodying cement compositions and the synergistic effect of lost circulation materials (LCMs) and fluid loss control additives (FLCAs) thereupon for cementing subterranea...  
WO/2021/058928A1
This invention provides a Mud Gas Separator design (MGS) which prevents gas from being discharged into the shaker / mud pit rooms. It eliminates the risk of suffocation of the personnel working in these areas and the fire / explosion / e...  
WO/2021/053545A1
Novel tools and techniques for are provided for machine learning control of automatic kick detection and blowout prevention. A system includes one or more blowout preventers (BOP), one or more sensors, a neural network bank comprising on...  
WO/2020/101962A3
An embodiment of a fluid bypass apparatus includes an axially elongated body configured to be deployed in a borehole in an earth formation, the body including a pilot conduit that allows fluid to flow through the body and a bypass condui...  
WO/2021/048533A1
Circulating downhole tool utilising a variable fluid pressure regulated cycle valve device that can be attached to the borehole assembly BHA of a coiled tubing and used down an offshore or onshore wellbore. The circulating downhole tool ...  
WO/2021/013838A3
The invention relates to a drill head for creating a substantially vertical borehole in the ground, comprising: a body, which can be connected to a rotational drive of a drilling device; drilling tools, which are arranged on the body, fo...  
WO/2021/050043A1
Systems and methods for separating paramagnetic material in wellbore return fluid. A quadrupole magnet system is disposed along conduit so that a paramagnetic field is symmetrically formed about a central axis of the conduit. A wellbore ...  
WO/2021/050520A1
A washpipe seal and method includes providing a first sliding mechanical face seal between two seal elements to seal a mud conduit, and a second mechanical face seal between two additional seal elements to define a cavity within a housin...  
WO/2021/045766A1
A method may include: providing a spacer fluid comprising water and an agglomerated zeolite catalyst; and displacing a drilling fluid in a wellbore using the spacer fluid.  
WO/2021/046457A1
A lost circulation material (LCM) that includes spheres having radially distributed and substantially-straight protrusions to facilitate engagement (such as interlocking and entanglement) of the spheres is provided. Each sphere has a plu...  
WO/2021/046436A1
A lost circulation material (LCM) that includes spheres having radially distributed hooks and latches to facilitate engagement (such as interlocking) of the spheres is provided. Each sphere has a plurality of hooks and a plurality of lat...  
WO/2021/046287A1
A drilling system (10) comprising: a drill string (16); a drill bit (20), a circulation sub (30) coupled to the drill string (16) wherein the circulation sub comprises, a selectively rotatable cam cylinder (50A) having a receiving end (5...  
WO/2021/044133A1
A hydraulic protection system (46) for preventing collapse of a hydraulic line (38). The system comprises a pressure sensing assembly (50) which is arranged to monitor a pressure differential between fluid external to the hydraulic line ...  
WO/2021/046223A1
A hydraulic communication nipple is disposed in between production tubing and a deep-set tubing-retrievable subsurface safety valve. In a default state, the hydraulic communication nipple fluidly communicates hydraulic fluid from the hyd...  
WO/2021/040961A1
A system and method are used in drilling a borehole in a formation. A trip to move a drillstring in the borehole is identified, where the trip is expected to produce a piston effect that changes a downhole pressure of the fluid in the bo...  
WO/2021/041477A1
A blowout preventer (BOP) for controlling pressure within a wellbore includes an internal cavity (406) and a front side (202) including a door opening (400), the door opening (400) providing access to the internal cavity (406). The BOP a...  
WO/2021/041475A1
A blowout preventer (BOP) for controlling pressure within a wellbore includes a body (200) having a front side (202) and a back side (204). The BOP also includes a door opening (400) extending through the front side (202). The BOP furthe...  
WO/2021/016357A3
A valve includes a seat, a ball, a stem, and a spring. The ball is separate from the stem. In a closed position, the ball seals against the seat. The spring biases the steam against the ball and the ball against the seat in the closed po...  
WO/2021/034816A1
A method of plugging a formation fracture includes drilling, with a drill string configured to flow drilling fluid, a wellbore, where, at a downhole location, the drilling fluid is lost through a formation fracture. The method also inclu...  
WO/2021/032964A1
The invention provides a managed pressure drilling system. The system comprises a rotating sealing device and a drill string assembly comprising a plurality of drill pipe members. Each drill pipe member has a first tool joint having a fi...  
WO/2021/032750A1
A method of controlling the composition of a drilling fluid comprises receiving measurements of properties of a drilling fluid; determining a concentration of the components of the drilling fluid by inputting the measured properties to a...  
WO/2021/029876A1
De-oited lost circulation' materials and. methods of using such materials to, for example, reduce fluid loss are provided. In some embodiments, such methods: include introducing a first treatment fluid; including a base fluid and a de -o...  
WO/2021/029874A1
A method for identifying cuttings volume may comprise taking one or more inlet measurements of a drilling fluid at an inlet meter before the drilling fluid is circulated into a wellbore, taking one or more outlet measurements of a drilli...  
WO/2021/022908A1
A method for replacing a down-hole packer particle filling layer (5) without changing the flowback of a down-hole pipe string (6). The filling layer (5) filled with packer particles is arranged in an annulus (A) between the down-hole pip...  
WO/2021/025718A1
An automated drilling-fluid additive system and method for on-site real-time analysis and additive treatment of drilling fluid to be directly injected into a well without additional storage or handling. The drilling fluid includes return...  
WO/2021/022142A1
A composite drill pipe including an inner pipe having a first diameter, an outer pipe having a second diameter greater than the first diameter, and a plurality of flow channels formed between the inner pipe and the outer pipe. The plural...  
WO/2021/021101A1
The current method comprises producing a loss control blend by selecting blend ingredients that contribute to thixotropy of the blend, density of the blend, and compressive strength of the set blend, wherein at least one of the blend ing...  
WO/2021/021858A1
A vacuum bit assembly includes an adapter having first and second ends, a central bore defined in the first end, and a locking member extending into the central bore. The vacuum bit assembly includes a drill bit having a workpiece engagi...  
WO/2021/021139A1
A hose assembly for a pump comprising a pressurized hose, wherein the pressurized hose is exposed to pressure during at least a part of the operation of the pump, and a leak detection system comprising an outer hose concentrically positi...  
WO/2021/013838A2
The invention relates to a drill head for creating a substantially vertical borehole in the ground, comprising: a body, which can be connected to a rotational drive of a drilling device; drilling tools, which are arranged on the body, fo...  
WO/2021/013846A2
The invention relates to a drill head and to a method for producing a substantially vertical borehole in the ground, in particular for producing a shaft, said drill head comprising a body (11) which can be connected to a rotational drive...  

Matches 1 - 50 out of 5,036