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公开(公告)号：US20200291744A1
公开(公告)日：2020-09-17
申请号：US16084130
申请日：2017-09-11
发明人： Stewart Darold Reed
摘要： 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 opening therethrough, wherein the sand bridge inducer includes one or more angled passageways defined through a wall of the sand bridge inducer that are oblique relative to the longitudinal axis. The sand bridge inducer can be segmented with a respective upper segment and lower segment at each respective one of the one or more angled passageways, wherein the respective upper and lower segments are connected to one another across the respective angled passageway for movement along the longitudinal axis relative to one another to enlarge the respective angled passageway for accommodating passage of larger particles and/or relieving pressure differentials caused by high flow rates and/or solids restricting flow.
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公开(公告)号：US20200271811A1
公开(公告)日：2020-08-27
申请号：US16063695
申请日：2016-08-31
摘要： A system for processing DAS VSP surveys in real-time is provided. The system includes a DAS data collection system coupled to at least one optical fiber at least partially positioned within a wellbore and configured to repeatedly activate a seismic source of energy. The system further includes an information processing system connected to the DAS data collection system. A seismic dataset is received from the DAS data collection system. The seismic dataset includes a plurality of seismic data records. Two or more of the plurality of seismic data records are combined into a stack. A quality metric indicative of a desired signal-to-noise ratio or incoherence of the stack is determined for each processed seismic dataset collected from a repeated source. Instructions are sent to the DAS data collection system to stop activating the seismic source, in response to determining that the quality metric has reached a predefined threshold.
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公开(公告)号：US20180329099A1
公开(公告)日：2018-11-15
申请号：US15578586
申请日：2016-12-22
发明人： Cemal Erdimer , Mark Elliott Willis , Amit Padhi
CPC分类号： G01V1/48 , G01H9/004 , G01V1/226 , G01V1/42 , G01V2210/161
摘要： A method for processing distributed acoustic sensing (DAS) vertical seismic profiling (VSP) data is provided. The method includes operations to receive DAS data associated with an optical fiber's response to seismic energy applied by three seismic energy sources. The three seismic energy sources each configured to apply seismic energy to the optical fiber in a direction that is orthogonal to a direction of seismic energy applied by the other two seismic energy sources, the optical fiber is at least partially positioned within a wellbore, and the DAS data includes three components directed in an axial direction of the wellbore associated with energy application by the respective three seismic energy sources. The method further includes operations to apply reciprocity to the three components to model an equivalent vertical point force source in the wellbore with receivers configured to receive the three components at a location of the respective three seismic energy sources.
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公开(公告)号：US20180313206A1
公开(公告)日：2018-11-01
申请号：US15533991
申请日：2015-02-12
IPC分类号： E21B47/09 , E21B33/12 , E21B33/05 , E21B17/20 , E21B47/12 , E21B47/14 , E21B33/16 , E21B33/068 , E21B17/00
摘要： A cement head including a tubular body having a top end and a bottom end, and a borehole arranged through at least a portion of the tubular body; a cement plug arranged in the borehole and configured to exit the cement head upon releasing a retention device; and a spool assembly arranged on the tubular body, wherein the spool assembly comprises a drum rotatable about a central axis and a continuous cable having a first end and a second end, the first end being attached to the drum and the second end being attached to the cement plug, and wherein rotating the drum about the central axis results in spooling or unspooling the continuous cable about the drum.
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公开(公告)号：US20190003267A1
公开(公告)日：2019-01-03
申请号：US15748674
申请日：2015-11-18
CPC分类号： E21B17/20 , E21B17/05 , E21B23/14 , E21B33/072
摘要： A chain of bend-limiter segments is coupled together. The chain has a first end and a second end. The chain is bendable such that an angle between the first end and the second end is at least N degrees and a radius of curvature of the chain is at least M. A cable is inserted through the chain from the first end to the second end. The chain and the cable are coupled to a tool. The tool is pulled using the cable. The chain maintains a radius of curvature of the cable greater than M and prevents a stress level in the cable from exceeding a yield point.
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公开(公告)号：US20230138857A1
公开(公告)日：2023-05-04
申请号：US17513627
申请日：2021-10-28
摘要： Disclosed herein is a method of servicing a wellbore penetrating a subterranean formation, comprising: placing a cementitious composition of the type disclosed herein into the wellbore. The cementitious composition comprises a cement blend and water, wherein the cement blend comprises Portland cement and pozzolan, wherein the Portland cement is present in an amount of from equal to or greater than about 0.01 wt. % to equal to or less than about 25.0 wt. % based on the total weight of the cement blend.
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公开(公告)号：US20230137629A1
公开(公告)日：2023-05-04
申请号：US17453626
申请日：2021-11-04
摘要： An apparatus comprises a sub-section of a pulse power drilling assembly including a transformer encircling a center flow tube through which a drilling mud is to flow for drilling a borehole into a subsurface formation based on periodic pulses of electrical discharges from the pulse power drilling assembly. The transformer comprises at least one primary winding that encircles the center flow tube; a core that encircles the at least one primary winding, wherein the core comprises an electrically non-conductive material; and at least one secondary winding that encircles the core.
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公开(公告)号：US20230137244A1
公开(公告)日：2023-05-04
申请号：US17514217
申请日：2021-10-29
发明人： Simon Whye Kwong Wai
IPC分类号： E21B23/00
摘要： A downhole tractor assembly operable in a wellbore that includes a tractor body and a tractor wheel assembly. The tractor wheel assembly includes a tractor wheel with teeth around a circumference of the wheel and grooves between adjacent teeth. The grooves include a profile in a plane parallel with the axis of the wheel. Also, each tooth includes an outer face with face grooves on each side of the outer face that extend less than across the wheel.
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公开(公告)号：US20230133700A1
公开(公告)日：2023-05-04
申请号：US17514654
申请日：2021-10-29
发明人： Songhua Chen , Wei Shao
摘要： System and methods for nuclear magnetic resonance (NMR) fluid substitution are provided. NMR logging measurements of a reservoir rock formation are acquired. Fluid zones within the reservoir rock formation are identified based on the acquired measurements. The fluid zones include water zones comprising water-saturated rock and at least one oil zone comprising rock saturated with multiphase fluids. Water zones having petrophysical characteristics matching those of the oil zone(s) within the formation are selected. NMR responses to multiphase fluids resulting from a displacement of water by hydrocarbon in the selected water zones are simulated. A synthetic dataset including NMR T2 distributions of multiphase fluids is generated based on the simulation. The synthetic dataset is used to train a machine learning (ML) model to substitute NMR T2 distributions of multiphase fluids with those of water. The trained ML model is applied to the NMR logging measurements acquired for the oil zone(s).
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公开(公告)号：US20230133492A1
公开(公告)日：2023-05-04
申请号：US17453250
申请日：2021-11-02
发明人： Yulia Mosina , Zhiwei Yue
IPC分类号： C09K8/532
摘要： A treatment fluid for treating iron sulfide and hydrogen sulfide can include a first additive of acrolein that provides a dual function to dissolve iron compounds and scavenge hydrogen sulfide. After dissolution of the iron compounds, free iron is formed, which can react to form iron oxide. The iron oxide can reprecipitate out of the solution. The treatment fluid can also include a second additive that is a chelating agent to chelate the free iron formed. The chelating agent can be a sugar acid. The two additives are compatible with each other and provide a synergistic effect with improved performance compared to the use of either additive alone.
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