A radial well trajectory measurement device and system

Abstract

The invention provides a radial well trajectory measurement device and system, the device includes: an operation module and an energy communication module; the operation module is arranged at the most downstream of the operation string, and can be used for measuring and drilling radial well trajectory; energy communication The module, installed at the end of the coiled tubing, is used to provide power for the operation module and realize data interaction between the operation module and ground equipment. Through the energy communication module, the present invention can control the behavior of the sensor, adjust the parameters of the sensor and control the trajectory measurement operation in any radial well operation process according to the operation situation and the requirements of the ground engineer, so as to increase the flexibility of the operation and reduce the number of trips. Save work time and cost.

Description

technical field [0001] The invention relates to well logging technology for oil and gas development, in particular to a radial well trajectory measuring device and system. Background technique [0002] With the exploration and development of international oil and gas resources, conventional oil and gas reservoirs are increasingly depleted, and characteristics such as low pressure, low permeability, low production, fault blocks, margins, and thin reservoirs have become the normal state of common oil and gas development. In the process of oil and gas development, the drilled oil and gas well trajectory is an important basis for the final completion of oil and gas wells and the design of oil and gas production methods. Therefore, accurate mapping of oil and gas well trajectories is crucial for oil and gas production. [0003] In the prior art, due to diameter and length limitations, conventional measurement tools cannot achieve ultra-short radius steering in the tubing, so the...

AI Technical Summary

Problems solved by technology

Due to the small size of the radial branch wellbore, post-drilling reentry of the branch wellbore cannot be performed after the steering gear is adjusted. Therefore, it is required to trip the tool twice to carry out the current branch well after the jet drilling is completed and before the steering gear is adjusted. Eye re-entry and trajectory measurement operations, which will multiply the radial and horizontal well operation period and construction costs

[0004] In addition, in the prior art, such measuring devices are powered by high-temperature-resistant button batteries, the memory chip is stored offline, and the design method of measuring pup joints integrating measurement and electricity is integrated.

However, since the operating temperature of small-sized high-temperature-resistant batteries and micro-electromechanical sensor elements generally does not exceed 85°C, strictly speaking, the existing radial well trajectory measurement devices and their design ideas can only be applied to shallow low-temperature oil and gas. Well operation (low temperature oil and gas well operating conditions: well depth 3000-4000m, bottom hole temperature ≤ 85 ℃), not suitable for radial well operations in conventional or even deep high temperature oil and gas wells

[0005] In addition, the radial well trajectory measurement of the prior art adopts the method of ultra-fast tripping and setting the effective working interval of the tool to reduce the consumption of electric energy and storage space of the measuring device, thereby prolonging the effective working time in disguise. However, due to its tripping speed If it is too fast, it will easily cause downhole complexity, affecting the success or failure of the operation and construction safety; moreover, the interval setting in advance is more rigid, which cannot effectively deal with common problems such as inaccurate operation time estimation and increased operation batches, let alone complex underground operations. Timely response will eventually cause operation failure, waste tripping time and increase operation cost

[0006] In addition, the existing radial well trajectory measurement technology mostly uses an integrated attitude sensor for measurement, but in actual use, the accelerometer data of the attitude sensor is used to calculate the equipment operating state and motion trajectory through the method of quadratic integration of time, which has the advantages of Large cumulative error; this type of measuring tool is composed of a housing and a joint, the housing and the joint are connected by threads, the measuring element and the battery are placed inside the housing, and there is no fluid channel in the tool, so it can only be measured by re-entry after drilling

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