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Remote real-time tracking method for well path

A real-time tracking and wellbore trajectory technology, applied in wellbore/well components, earthwork drilling, measurement, etc., can solve the problem of unclear formation dip, unsatisfactory horizontal well exploration and development effect, and inability to hit the target according to the design. And other issues

Inactive Publication Date: 2011-01-19
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above prior art does not organically combine wellbore real-time trajectory data, lithology profile data, etc. with the remote transmission system, and cannot use the dynamic information of the downhole on site to conduct two- and three-dimensional image planes for authorized users through the Internet network. And space display, intuitive real-time display and playback of wellbore trajectory, it cannot rule out the influence of unfavorable factors such as complex geological structure, unclear formation dip angle, thin target reservoir, etc., still cannot enter the target point according to the design target, the exploration and development effect of horizontal wells is still unsatisfactory

Method used

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  • Remote real-time tracking method for well path

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Embodiment 1

[0029] The invention discloses a method for remote real-time tracking of wellbore trajectory, which combines real-time measurement data of wellbore trajectory (LWD / MWD) while drilling with real-time on-site measurement, wellhead coordinate data, well deviation data, stratum layer data, and lithology profile. The data and formation dip data are transmitted back to the base server through remote transmission, and the above data are read from the base server database. According to the established mathematical model, a real-time well deviation trajectory tracking map is generated and released synchronously through the Web.

[0030] The mathematical model described is a commonly used model in the real-time tracking method of the wellbore trajectory, which specifically uses the relationship algorithm between the tangent plane and the dip angle, the curvature radius method, the double-scale-dip angle algorithm, the relationship between the visible area and the double scale, and the str...

Embodiment 2

[0104] Such as figure 1 As shown, it is a loading process of a remote real-time tracking system for wellbore trajectory. After the user logs in, it initializes and loads wellhead coordinate data, well deviation data, stratum layer data, lithology profile data, and stratum dip angle and other data. Calculate other well inclination table parameters (closing distance, closing angle, east coordinate, north coordinate, horizontal displacement, etc.) based on the basic well depth, azimuth, and inclination angle, and load external information pictures; at the same time, the visible area and coordinates are automatically determined; multi-section Status display, showing the stratum trajectory graph after setting a new section; setting reservoir and coordinate scale and stratum fitting, realizing real-time well trajectory playback, tripping out, and tripping in two-dimensional graphic display.

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Abstract

The invention discloses a remote real-time tracking method for a well path, which relates to the technical field of real-time tracking of a wellbore path of a petroleum drilling well. The method of the invention comprises the following steps: remotely transmitting the wellbore path (LWD / MWD) measured in real time on the field, real-time measured data when drilling, well top coordinate data, well deflection data, stratum data, lithological profile data and stratigraphic dip data to a base server, reading the data from a database of the base server, generating a real-time well deflection path tracking chart according to an established mathematical model, and issuing synchronously through Web. The invention excludes the influence of adverse factors of complex geologic structure, obscure stratigraphic dip, thin objective target reservoir and the like, can accurately shoot the target point according to design, and obviously improves the exploratory development effect of a horizontal well.

Description

technical field [0001] The invention relates to the technical field of real-time tracking of wellbore trajectory in oil drilling, in particular to a method for real-time tracking of wellbore trajectory in a remote manner. Background technique [0002] In the process of oil exploration and development, in order to increase the recoverable reserves and improve the recovery rate, horizontal well drilling technology is currently being widely used. The drilling of this technology can better meet this demand, but horizontal well drilling technology is a complex In the production process, due to factors such as complex underground geological structure, unclear formation dip angle, thin target reservoir and other factors, it is difficult to hit the target according to the design, and it is easy to deviate from the target, thus affecting the exploration and development effect of horizontal wells. However, the geological design of horizontal wells still has a certain gap in terms of s...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B47/02E21B47/04E21B47/09E21B47/12E21B47/022E21B49/00
Inventor 韩永刚罗利张辉邢会民唐家琼刘德伦罗谋兵庞江平何葵
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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