128 results about "Subsurface geology" patented technology

Providing pressurized fracturing fluid with a fracturing pump transport comprising a first fracturing pump and a second fracturing pump that are coupled on opposite sides of a dual shaft electric motor. A first drive line assembly comprising a first engagement coupling that allows for selective engagement and/or disengagement of the first fracturing pump with the dual shaft electric motor. A second drive line assembly comprising a second engagement coupling that allows for selective engagement and/or disengagement of the second fracturing pump with the dual shaft electric motor. The fracturing pump transport also comprising an engagement panel that allows for selective engagement or disengagement at the first engagement coupling based on receiving a remote command.

The invention provides an analog measurement method and a device of oil saturation in strata, which belong to a geophysical exploration testing method and an analog device. The analog measurement method of the oil saturation in the strata comprises the steps of simulating an actual stratum (manufacturing an artificial cemented rock core model), arranging an analog well, arranging an oil-water saturation monitoring system in the artificial cemented rock core model, constructing an electric field at the periphery of the wall of the well, obtaining the oil saturation illustrative charts of different pervious courses by measuring the change of the resistivity of the rock core model and the like. The method not only can well simulate and measure the underground geological condition but also can further learn the position of the residual oil of a reservoir and the change rule of the saturation, thereby learning and determining the oil accumulation reserves and the grade in the simulated stratum.

The invention relates to methods and computer-readable medium to implement computing the propagation velocity of seismic waves in the earth. The invention computes the true propagation velocity of seismic waves in the earth, which is a condition of obtaining an accurate image of subsurface geology that can be used to prospect for oil and gas deposits. In an embodiment, the method of computing the propagation velocity of seismic waves in earth, includes providing an estimate of the propagation velocity, generating a time shift gather using a depth migration at a plurality of locations of the earth, converting each of the time shift gathers to a semblance gather, transforming each semblance gather into a velocity gather whose energy peaks represent a root-mean-square average of the propagation velocity along the forward and backward path between earth's surface and a point of the subsurface geology, and converting the energy peaks to the propagation velocity.

A method for surface estimation of reservoir properties, wherein location of and average earth resistivities above, below, and horizontally adjacent to the subsurface geologic formation are first determined using geological and geophysical data in the vicinity of the subsurface geologic formation. Then dimensions and probing frequency for an electromagnetic source are determined to substantially maximize transmitted vertical and horizontal electric currents at the subsurface geologic formation, using the location and the average earth resistivities. Next, the electromagnetic source is activated at or near surface, approximately centered above the subsurface geologic formation and a plurality of components of electromagnetic response is measured with a receiver array. Geometrical and electrical parameter constraints are determined, using the geological and geophysical data. Finally, the electromagnetic response is processed using the geometrical and electrical parameter constraints to produce inverted vertical and horizontal resistivity depth images. Optionally, the inverted resistivity depth images may be combined with the geological and geophysical data to estimate the reservoir fluid and shaliness properties.

Providing mobile electric power comprising a power generation transport configured to convert hydrocarbon fuel to electricity and an inlet and exhaust transport configured to: couple to at least one side of the power generation transport such that the inlet and exhaust transport is not connected to a top side of the power generation transport, provide ventilation air and combustion air to the power generation transport, collect exhaust air from the power generation transport, and filter the exhaust air. In another embodiment, a fracturing pump transport comprising a first pump configured to pressurize and pump fracturing fluid, a second pump configured to pressurize and pump the fracturing fluid, and a dual shaft electric motor comprises a shaft and configured to receive electric power from a power source and drive in parallel, both the first pump and the second pump with the shaft.

The invention discloses a speed modeling method based on a true earth surface and a floating datum plane. The method includes the steps that a superficial part speed model is built by using superficial part speed resources reflected by excitation well depth, uphole time, short-refraction information and logging information; medium-deep part speed spectrum resources are processed, and a medium-deep part speed model is built; on the basis of a fusion technology, the superficial part speed model and the medium-deep part speed model are fused to be a full speed model based on the true earth surface and the floating datum plane; on the basis of a newly derived average statics correcting value method floating datum plane sea level elevation expression, the condition that the floating datum plane deviates from the earth surface is quantified, and a full speed model datum plane correction technology is innovatively built. The full speed module obtained according to the method conforms to the underground geological rules better, and not only can be applied to a prestack depth migration link of earthquake information processing to improve migration imaging precision, but also can be applied to a time-depth conversion link of earthquake information interpretation to improve structural interpretation precision.

Methods and apparatus are provided for receiving, detecting and transmitting geophysical data from a plurality of electrodes inserted through a structure's pavement foundation in a non-destructive manner and into the soil utilizing a dynamically reconfigurable wireless control unit located on each electrode. Data from the control units is transmitted by a wireless signal to a centralized data processor for analysis. Control data is provided from a central control processor to the control unit by wireless transmission. The control unit, which is positioned, includes a multi-channel radio frequency transmitter/receiver and a processor to actuate relays and record data returns from the measured substrate soil for transmission to the central data processor. The control unit incorporates a changeable code or address to unambiguously identify itself, and its spatial relationship to other electrodes, to the central data processor and the central control processor. The control units are equipped with a GPS positioning device to allow for automatic transmission of electrode location and for electrode placement without a manual survey being required.

Methods and apparatus are provided for receiving, detecting and transmitting geophysical data from a plurality of electrodes placed in the soil utilizing a dynamically reconfigurable wireless control unit that is located on each electrode. Data from the control units is transmitted by a wireless signal to a centralized data processor for analysis. Control data is provided from a central control processor to the control unit by wireless transmission. The control unit, which is positioned, includes a multi-channel radio frequency transmitter/receiver and a processor to actuate relays and record data returns from the measured substrate soil for transmission to the central data processor. The control unit incorporates a changeable code or address to unambiguously identify itself, and its spatial relationship to other electrodes, to the central data processor and the central control processor. The control units are equipped with a GPS positioning device to allow for automatic transmission of electrode location and for electrode placement without a manual survey being required.

The present invention provides a phase control heterogeneous mechanical parameter crustal stress prediction method, comprising: a first step of establishing a petrographic interpretation template and performing single well petrographic interpretation; a second step of performing inter-well prediction according to the interpreted all single well petrographic data in combination with seismic attribute data, and establishing a three-dimensional petrographic model; a third step of establishing a p-wave and s-wave time difference relation of different petrographic facies, and solving each single well mechanical parameter; a fourth step of establishing a three-dimensional heterogeneous mechanical parameter model under the control of petrographic facies; and a fifth step of determining a boundary condition of crustal stress finite element simulation, and predicting a three-dimensional crustal stress field. The phase control heterogeneous mechanical parameter crustal stress prediction method achieves finite element crustal stress simulation under a three-dimensional heterogeneous mechanical parameter condition, and the simulation model is closer to real mechanical parameter distribution characteristics of underground geologic bodies than a conventional inner-layer homogeneous mechanical parameter model, thereby greatly improving prediction accuracy of crustal stress.

A method and apparatus are provided for detecting and transmitting geophysical data from a plurality of electrodes inserted into the soil utilizing a set of identical dynamically reconfigurable voltage control units located on each electrode and connected together by a communications and power cable. A test sequence is provided in each voltage control unit. Each voltage control unit records data measurements for transmission to a central data collector. Each voltage control unit incorporates and determines its positional relationship to other voltage control units by logging when the unit is attached to the electrode. Each voltage control unit I equipped with a magnetic switch for detecting when they are in contact with the electrode.

The invention relates to methods and computer-readable medium to implement computing the propagation velocity of seismic waves in the earth. The invention computes the true propagation velocity of seismic waves in the earth, which is a condition of obtaining an accurate image of subsurface geology that can be used to prospect for oil and gas deposits. In an embodiment, the method of computing the propagation velocity of seismic waves in earth, includes providing an estimate of the propagation velocity, generating a time shift gather using a depth migration at a plurality of locations of the earth, converting each of the time shift gathers to a semblance gather, transforming each semblance gather into a velocity gather whose energy peaks represent a root-mean-square average of the propagation velocity along the forward and backward path between earth's surface and a point of the subsurface geology, and converting the energy peaks to the propagation velocity.

The invention provides a data acquisition designing method in three-dimensional seismic physical simulation, which mainly comprises a data acquisition design flow, a seismic physical model design technology and a three-dimensional transverse coverage frequency calculation formula and a three-dimensional observation system template decomposing and composing method in the three-dimensional seismic physical simulation experiment. The design technology of a key part in the design of a three-dimensional seismic physical model refers to the design technology of simplifying, laminarizing, exploration target outlining and abstracting a work-area subsurface geologic structure as well as the design technology of a seismic physical model scale factor. By applying the method, the work efficiency and the experiment achievement quality of a seismic physical model laboratory can be improved. In recent years, the laboratory cooperates with domestic Daqing, Jilin, Liaohe, Jidong, Dagang, Shengli, Xinjiang, Changqing, Renqiu, Zhongyuan, Jiangsu, Jianghan oil fields and the like to conduct scores of three-dimensional seismic physical model experiments, thereby obtaining better effect.

The invention relates to a method for utilizing geological risk post net present value for decision-making of oil and gas drilling, underground geological conditions and oil and gas accumulation conditions are firstly taken as parameters, the risk probability method is used for calculating the geological risk value, thus obtaining the corresponding geological success rate; the net present value with different discount rate and the risk net present value NPVrisk corresponding to the different geological success rate are calculated according to the taken parameters; when the NPVrisk is not less than zero, the decision that a single target can be drilled is made; a risk post investment portfolio optimization model is established, the risk net present value for portfolio target drilling decision-making is optimized, when the preferential target drilling portfolio meets the production requirements, the decision-making of the portfolio target drilling is feasible, otherwise, the decision-making is given up; the method only needs to stipulate one NPVrisk as a decision-making indicator, then the relative superiority of a plurality of items can be shown by comparison, thus allowing the risks and benefits and the actual exploration effects to be closer and greatly promoting the credibility of the investment portfolio.

A method for surface estimation of reservoir properties, wherein location of and average earth resistivities above, below, and horizontally adjacent to the subsurface geologic formation are first determined using geological and geophysical data in the vicinity of the subsurface geologic formation. Then dimensions and probing frequency for an electromagnetic source are determined to substantially maximize transmitted vertical and horizontal electric currents at the subsurface geologic formation, using the location and the average earth resistivities. Next, the electromagnetic source is activated at or near surface, approximately centered above the subsurface geologic formation and a plurality of components of electromagnetic response is measured with a receiver array. Geometrical and electrical parameter constraints are determined, using the geological and geophysical data. Finally, the electromagnetic response is processed using the geometrical and electrical parameter constraints to produce inverted vertical and horizontal resistivity depth images. Optionally, the inverted resistivity depth images may be combined with the geological and geophysical data to estimate the reservoir fluid and shaliness properties.

A method and apparatus are provided for detecting and transmitting geophysical data from a plurality of electrodes inserted into the soil utilizing a set of identical dynamically reconfigurable voltage control units located on each electrode and connected together by a communications and power cable. A test sequence is provided in each voltage control unit. Each voltage control unit records data measurements for transmission to a central data collector. Each voltage control unit incorporates and determines its positional relationship to other voltage control units by logging when the unit is attached to the electrode. Each voltage control unit I equipped with a magnetic switch for detecting when they are in contact with the electrode.

Methods and apparatus are provided for receiving, detecting and transmitting geophysical data from a plurality of electrodes placed in the soil utilizing a dynamically reconfigurable wireless control unit that is located on each electrode. Data from the control units is transmitted by a wireless signal to a centralized data processor for analysis. Control data is provided from a central control processor to the control unit by wireless transmission. The control unit, which is positioned, includes a multi-channel radio frequency transmitter/receiver and a processor to actuate relays and record data returns from the measured substrate soil for transmission to the central data processor. The control unit incorporates a changeable code or address to unambiguously identify itself, and its spatial relationship to other electrodes, to the central data processor and the central control processor. The control units are equipped with a GPS positioning device to allow for automatic transmission of electrode location and for electrode placement without a manual survey being required.

The invention discloses a method and equipment for detecting a hydrocarbon-containing geological stratum by passing through a well hole, in particular to a characteristic instantiation method for obtaining a fluid sample correlated to an underground geological stratum from fluid correlated to the underground geological stratum. In the characteristic instantiation method, the chemical composition and the thermal physical property of the fluid sample are measured in the well hole correlated to the underground geological stratum, a mathematical model which expresses the fluid sample is selected on the basis of at least one of the chemical composition or the thermal physical property, a parameter of the mathematical model is regulated on the basis of at least one of the chemical composition or the thermal physical property to generate a regulated mathematical model, and then the property of the fluid correlated to the underground geological stratum is determined on the basis of the regulated mathematical model.

The invention discloses a seismic reflection data-based buried hill oil and gas field underground geological map compiling method. The method is characterized by comprising the following steps: S1, a base drawing map of the buried hill oil and gas field underground geological map is compiled; S2, a stratum attitude stable area and an attitude change obvious area in the drawing area are determined; S3, an inner buried hill stratum attitude relative stable area and a stratum boundary on the underground geological map are compiled; S4, a stratum boundary in the inner buried hill stratum attitude change obvious area is compiled; S5, according to a sequence of stratum ages from new to old, geological boundaries for different target stratum interfaces of the inner buried hill are drawn respectively; and S6-7, each geological boundary is changed and perfected to obtain the underground geological map. On one hand, the workload of seismic profile interpretation is greatly reduced, the drawing time is saved, the drawing efficiency is improved, and on the other hand, the restriction of the overall poor quality of deep seismic reflection data to compilation of the underground (ancient) geological map can be overcome effectively.

The invention relates to a method for establishing a low frequency model of seismic wave impedance inversion. The method comprises the steps of determining a filter for frequency selection based on an observation seismic record; calculating an observation wave field envelope based on the filter and the observation seismic record; establishing an objective function according to the observation wave field envelope, and using the objective function for iterative inversion to obtain the velocity of subsurface media; and according to the velocity of the subsurface media, calculating the density of the subsurface media by using an empirical formula, and then obtaining an impedance low frequency model. According to the invention, the wave field envelope is constructed by using a preferred low frequency seismic record within a certain frequency band, the objective function is established based on the envelope information, the velocity of the subsurface media is obtained by inversion, and then the impedance low frequency model is obtained; and the low frequency data are insensitive to the cycle-skipping problem so that the capability of overcoming the cycle-skipping problem is improved, can act as an initial velocity model of wave impedance inversion to make the seismic impedance inversion result better reflect the characteristics of the subsurface geological structure and reservoir lithology, and provide important basis for exploration and development.