62 results about "Mud logging" patented technology

The application of a gas analyzer for gas mud logging is presented to measure gases in the return mud flow used in drilling processes. A supported membrane extraction probe from the analyzer is inserted into the mud flow. The probe extracts target gases from the mud through the membrane. Extracted gases are transported by an internal pump to an internal gas sensor unit. The infrared sensor unit is utilized to subject the gases to infrared emitted energy to excite the gasses at a molecular level for sensing and detection. The sensor then transfers sensed values electronically to a digital conditioning board. As the data is digitized in the conditioning board it is encoded with information to enable a means of correlating the derived sensor data. The data is then sent to a digital wireless transceiver for transport to a remote receiving transceiver connected to a microprocessor for data logging.

The invention discloses a real-time logging data acquisition and synchronous early-warning method, comprising the following steps: configuring data acquisition modules in well sites, configuring basic information of the well sites, and establishing an early-warning model; acquiring the real-time data of the well sites, and analyzing and formatting the real-time data; classifying and carrying out statistics on the real-time data according to the early-warning model for carrying out comprehensive analysis and judgment and early warning; and processing the formatted data and the abnormal information obtained based on the early-warning model into a standard format, sending to a base, and carrying out secondary early-warning. In the method, the real-time logging data of a site mud logging unitunder a plurality of operating conditions is acquired and then subject to intellectualized comprehensive analysis and judgment, and primary abnormal early warning is carried out; and meanwhile the data is processed into the standard format and then sent to the base so as to realize a synchronous secondary warning mechanism between the site and the logistical base, thus achieving the purposes of remote automatic monitoring and early warning during the well drilling process in a plurality of the well sites, reducing downhole accidents and meeting the demand for safety drilling production.

Systems and methods for high speed mud gas logging are described. A general workflow of mud gas logging uses tandem mass spectroscopy. The workflow involves first separating the volatile components of the hydrocarbons (typically C8 and below) from the drilling fluid using a fluid extractor (or degaser). Extracted gases are then diluted in air and transported to an analyzer, which measures the concentration of each of those gases in air. A tandem mass spectroscopy-based analyzer is used that is able to quantify each of those hydrocarbon components, including resolving isomeric species, while tolerating the presence of the non-hydrocarbons. According to some embodiments, triple quadrapole mass spectroscopy is used.

The invention discloses a method for simulating deposition on the basis of deposition process control of reference planes. The method includes analyzing deposition environments of deposition zones by the aid of well logging, mud logging and rock core information and determining change conditions of the reference planes and ancient landform conditions by the aid of burial history information; inputting ancient landforms into hydrodynamic models as initial landforms according to ancient landform analysis, simulating and reconstructing hydrodynamic characteristics of research zones, simulating and reconstructing transportation and deposition of sediment on the basis of hydrodynamic research according to sediment transport and diffusion equations, constraining deposition and denudation of deposits by the aid of the reference planes on the basis of transportation and deposition of the sediment, superposing deposition and denudation of the deposits on the initial landforms to be used as landforms for next simulation so as to carry out cyclic processes for simulating and reconstructing deposition. The method has the advantages that conditions of conditions of the reference planes are considered in simulation processes, and accordingly deposition at basin level can be simulated; the method is short in simulation time, and correction can be repeatedly carried out until requirements of geological characteristics are met.

The invention discloses a method for real-time monitoring of formation pressure by means of remote mud logging information. The method comprises the steps of selecting an adjoining well and acquiring comprehensive mud logging data, calculating the mud logging dc index of the adjoining well according to the comprehensive mud logging data, determining a normal trend line according to the mud logging dc index of the adjoining well, acquiring real-time information of a mud logging remote transmission system, calculating the value of the mud logging dc index according to the real-time information in real time, conducting real-time shaft pressure state analysis according to the well drilling state, drawing a mud logging remote information real-time monitoring result curve by means of the value of the mud logging dc index calculated in real time and a result of shaft pressure state analysis, and judging abnormal change of the formation pressure by means of the normal trend line of the adjoining well. According to the method, monitoring of the formation pressure by means of the remote mud logging information is achieved, the shaft pressure state can be analyzed during drilling, an anomaly alarm can be given, the occurrence of downhole accidents is reduced, and safe well drilling is achieved.

The present invention provides a dominant-lithology-based carbonate rock lithic facies characterization method, which comprises: collecting the outcrop, the well boring and well logging data, the paleontological fossils and the geochemical data at the target layer section of a study area, carrying out comparing and analyzing with seismic data, and carrying out fine dividing and comparing on the stratum at the target layer section of the study area; carrying out high-frequency sequence stratigraphic dividing and comparing on the target layer section of the study area, and establishing a high-frequency sequence stratigraphic grillwork; observing, describing and classifying the outcrop and the cores of each well in the study area, and establishing a lithology evolution sequence in the targetlayer section of the study area; carrying out comprehensive calibration on the cores of each well, the outcrop, the seismic data, the well logging data and the mud logging data, determining the lithology combination characteristics, and quantitatively dividing the dominant lithology; dividing and describing the single wells and the outcrop lithic facies by using the dominant lithology; and completing a finely divided carbonate rock lithic facies profile map within the isochronous sequence stratigraphic grillwork, completing a dominant lithic facies plane layout map within the sequence stratigraphic grillwork, and completing the dominant-lithology-based characterization of the carbonate rock lithic facies.

Real-time method for determining the porosity and water saturation of an underground formation using gas and mud logging data

A method and a computer program product for determining the porosity (PHI) and water saturation (Sw) of an underground formation while drilling a borehole, using gas and mud logging data obtained while drilling.

The invention discloses a method for eliminating pump stroke jamming signals of a drilling fluid logging while drilling transmission system. The method for eliminating the pump stroke jamming signals of the drilling fluid logging while drilling transmission system adopts an adaptive Fourier series compound mode to compound pump stroke jamming signals and synchronize with received downhole data signals based on a pump stroke jamming signal fundamental frequency by obtaining the pump stroke jamming signal fundamental frequency, and eliminates the pump stroke jamming signals in the received downhole data signals after being synchronized based on the pump stroke jamming signal fundamental frequency. The method for eliminating the pump stroke jamming signals of the drilling fluid logging while drilling transmission system can effectively remove pump stroke jamming signals, and enables drilling fluid to accurately receive downhole useful signals along with a ground received end in a logging while drilling transmission system.

The subject application is directed to a system and method for document processing device status logging. Status data is first received corresponding to operations of an associated document processing device. The received status data is then stored in a suitable storage location. A determination is then made whether a predefined interval occurred. When the interval has occurred, the stored data is deleted or overwritten. When a secondary memory device is received and recognized by the document processing device, the received status data is routed to the secondary memory device, whereupon the status data remains in the storage location until such time as the predefined interval has occurred. When the secondary memory device that was received by the document processing device is not detected or recognized, operations return to awaiting the elapse of the predefined interval or the detection of a recognizable secondary memory device.

Methods and apparatus for performing MUD logging for a volume in a system implementing network-based virtualization are disclosed. This is accomplished by enabling two or more MUD loggers to separately maintain a MUD log for the volume. Through enabling the MUD loggers to communicate, the MUD loggers may update their respective MUD logs. Each MUD log includes information for one or more epochs, where the information for each of the epochs indicates a set of one or more regions that have been modified during the corresponding epoch.

The invention provides a well site digital integrated management and control system. The well site digital integrated management and control system comprises a back face interface part, an inner structure part and a front panel part. The inner structure part comprises a dual-redundancy CPU module where data collection is integrated, an environment monitoring module, a square bin device monitoring module, a 9-bit current detection module, a 3G communication module, a dual-redundancy power supply converting and switching module, a data collection and storage system and a data application and display system. By means of the well site digital integrated management and control system, the full coverage of all fields of drilling, mud logging, well logging, geophysical prospecting, underground working and the like can be achieved, information sharing platforms of all systems such as on-site data collection, data transmission, video monitoring, device monitoring, video conferences, production scheduling, production and running statistics and the like are established, and the service requirements of all the fields for real-time production management, dynamic data analysis, emergency communication, remote commanding and the like are met.

The invention discloses a method for establishing a fine anisotropic shale rock physical model. The method comprises the following steps: establishing a rock physical model capable of predicting the shale stiffness tensor through logging, mud logging, indoor testing, anisotropic SCA and DEM models, isotropic SCA and DEM models and a Brown-Korringa model. According to the method, the influence of inorganic matter pores and organic matter pores on a modeling result is considered respectively; the contents of organic matter pores and inorganic matter pores are respectively calculated by utilizingthe contents of adsorbed gas and free gas and and combining the total porosity; the method comprehensively considers the cause of shale anisotropy, is more consistent with the actual physical property characteristics of the shale stratum, has higher modeling precision than other methods, and can provide basic data for subsequent wave velocity prediction, anisotropy evaluation, rock elasticity parameter evaluation, crustal stress evaluation and the like.

The invention provides a characterization method of oil and gas enrichment degree, belonging to the technical field of oil and gas exploration, which can characterize the oil and gas enrichment degreeof each interval of a single well. The characterization method of oil and gas enrichment degree comprises the following steps: according to mud logging data, well logging data and oil testing data ofa plurality of known reserves wells, determining and assigning oil and gas display grades contained in different intervals in the known wells in each kind of data respectively; calculating the totalthickness corresponding to each oil and gas display level and the total thickness of sandstone in each interval of each well in each data, and then calculating the effective oil and gas accumulation value of each data for each interval; linearly fitting the relationship between the reserves abundance corresponding to each interval of a known well and the effective values of oil and gas accumulation of three kinds of data as an evaluation formula; calculating the predicted reserve abundance corresponding to each interval of unknown reserve well by using the evaluation formula.

The invention relates to a method for computing pressure attenuation gradients. The method includes particular steps of S1, collecting and collating geological materials, mud logging materials, well logging materials and oil testing materials of research areas; S2, predicting mudstone pressures of the research areas by the aid of Eaton processes and equivalent depth processes and correcting the mudstone pressures by the aid of measured pressures; S3, combining geological structures, sedimentary facies distribution characteristics and fault development conditions of the research areas with oneanother according to predicted formation pressure values and drawing pressure coefficient contour lines; S4, building different pressure attenuation gradient computation models and computing the pressure attenuation gradients according to the different pressure attenuation gradient computation models. The method has the advantages that sedimentary facies change and fault geological factors are considered, the heterogeneity of pressures in change procedures is sufficiently considered, the different pressure attenuation gradient computation models are built, the pressure attenuation gradients ofthe research areas are computed piecewise, accordingly, distribution and change laws of the pressure attenuation gradients are accurately clear and definite, and the method is favorable for guiding oil and gas exploration on overpressure oil and gas bearing basins.

A gamma ray scintillation spectrometer is disclosed in which an inorganic scintillation crystal has a channel extending therethrough for receiving a sample into, and disposing a sample out of, the scintillation crystal. The spectrometer further includes a photomultiplier tube optically coupled to the scintillation crystal to detect photons generated by the scintillation crystal. A system and a method for using the gamma ray scintillation spectrometer are also provided.

The present invention discloses a drilling fluid extreme pressure lubricant having a freezing point of lower than -25 DEG C, wherein the drilling fluid extreme pressure lubricant comprises, by weight, 80-95 parts of lightweight lubricating oil, 5-15 parts of an extreme pressure anti-wear agent, 0.5-2 parts of a surfactant, and 0.5-5 parts of an anti-foaming agent. According to the present invention, the drilling fluid extreme pressure lubricant is suitable for the petroleum drilling operation in high-cold regions, and has the freezing point of less than -25 DEG C; after 0.5-1% of the drilling fluid extreme pressure lubricant is added to a drilling fluid, the lubricating coefficient reduction rate is greater than 70%, the extreme pressure film strength is more than or equal to 150 MPa, no bubble is generated in the drilling fluid, other performances of the drilling fluid are not affected, no fluorescence exists, the geological mud logging is not affected, the compatibility is good, and the drilling fluid has the excellent lubricating effect at the temperature of higher than 200 DEG C under the conditions of high density and high pollution.

The invention discloses a method for establishing an orthotropic shale rock physical model. The method comprises the following steps: through logging, mud logging, indoor testing, anisotropic SCA andDEM models, isotropic SCA and DEM models, a Schoenberg linear sliding model and a Brown-Korringa model, establishing a rock physical model capable of predicting the shale stiffness tensor. According to the method, the influence of inorganic matter pores and organic matter pores on a modeling result is considered respectively; the contents of organic matter pores and inorganic matter pores are respectively calculated by utilizing the contents of the adsorbed gas and the free gas and combining the total porosity, the cause of shale anisotropy and the condition that vertical cracks are developedare comprehensively considered, and the problem that the orthotropic shale rigidity coefficient is difficult to obtain is solved.