615 results about "Petroleum exploration" patented technology

A method for stratigraphic interpretation of a seismic image for determining a sedimentary history of an underground zone having application to petroleum exploration. The seismic reflectors of the image are digitized by means of an applied shape recognition technique. At least one attribute characteristic of the structure of the image in the vicinity of each reflector is calculated for a set of reflectors by means of an image analysis technique. This analysis is based on at least one analysis window whose shape is controlled by the associated reflector. Pertinent reflectors, in the sense of the stratigraphic interpretation, are selected from among this set of reflectors on the basis of this attribute. Finally, the sedimentary history of the underground zone is reconstructed from a stratigraphic interpretation of the reflectors thus selected.

The invention relates to a recovery method and a recovery device for multi-cluster sandblasting perforation fluid in coiled tubing, and belongs to the technical field of petroleum exploration and development. In the replacement liquid recovery stage, the present invention opens the valve of the replacement liquid recovery tank, and recovers the replacement liquid into the replacement liquid recovery tank for use in the next cluster of perforations; in the sandblasting liquid recovery stage, opens the sandblasting The valve of the liquid recovery tank is used to recycle the sandblasting liquid into the sandblasting liquid recovery tank for static settlement; after the sandblasting liquid in the sandblasting liquid recovery tank is left to settle for a set time, the sandblasting liquid in the sandblasting liquid recovery tank The sand-free base fluid is transferred to the replacement fluid recovery tank for use in the next cluster of perforations. The invention achieves recovery by alternately using the recovery tanks to settle the perforating sand in the sandblasting fluid, the flow process is simple, no chemical agent is added in the whole treatment process, the operation cost is low, the construction efficiency is high, and the sandblasting fluid and replacement fluid can be realized The effective recovery of perforating fluid reduces the cost of perforating fluid and improves economic benefits.

A method having application for petroleum exploration or geological storage of generating a mesh of a faulted underground medium, comprising generating a hex-dominant mesh from faults and horizons in a form of a 3D triangulated surfaces. Each 3D triangulated surface is converted to a 2D triangulated surface onto which the faults are projected by an isometric unfolding technique. A regular two-dimensional grid pattern is generated for each 2D triangulated surface. The faults are accounted for by deforming quadrilaterals of the grid pattern intersected by projected faults. The deformed regular grid pattern is then converted to a 3D gridded surface and each quadrilateral which is crossed by a fault is converted into two triangles at a level of a diagonal. Finally, after iterating for all the 3D triangulated surfaces, the mesh is generated by creating links between the nodes of neighboring three-dimensional gridded surfaces with respect to the faults.

A signal interpretation engine apparatus and method are disclosed as including a computer programmed to run a feature expansion module, a weight table module, a consolidation module, and a map generation module. The feature expansion module contains feature operators for operating on a signal to expand the signal to form a feature map of feature segments. Each feature segment corresponds to a unique representation of the signal created by a feature operator from the signal across an epoch. An epoch corresponds to an event within a time segment. A consolidation module applies aggregators to consolidate the inner products or superposition segments into a distribution function representing an attribute over a domain reflecting a selected weight table, aggregator, and event type, corresponding to each value of the attribute.