Лизинг спецтехники

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The acquisition away from bottomhole pressure and temperatures analysis will be organized and you may performed in a fees-active trend that have a minimum disturbance to normal doing work habits. This particular article talks about options for getting stress and you will heat studies.


  • Do you know the expectations from dimensions: fixed tension, tank figure, liquid characterization, vertical pressure and you can temperature profile, better flow characterization, or any other?
  • ‘s the environment openhole otherwise cased opening? A research or development really?
  • Can there be a need for real-go out surface readout (SRO) measurements otherwise is the details end up being submitted downhole and you will analyzed later?
  • Exactly what metrology is required into the dimensions (age.grams., maximum heat and you may pressure, dimension quality and you can accuracy)?
  • How will new gauges feel conveyed toward bottomhole calculating circumstances?
  • Could there be a desire to carry out continuing otherwise repeated dimensions more than days otherwise decades?
  • What economics use, and you can perform it mean a prospective tradeoff into the top quality or level of the fresh specifications?

Proportions should be carried towards body, usually via a digital cable, or submitted for the downhole thoughts running on batteries.

SRO contains the visible advantageous asset of delivering study in real time. Real-big date readouts are specially very theraputic for transient dimensions that want time toward tension so you can stabilize and you may radial move to develop. Since the stabilizing times count on tank and liquid characteristics and because the brand new devotion ones variables is usually the aim of pressure proportions in the really evaluation, anticipating the size of stabilization episodes is often tough. SRO is recommended in these instances.

Acquiring bottomhole stress and you will heat investigation

Particular applications, always those who work in the lower economic level, will likely be presented without needing SRO. Advantages are straight down working will cost you and a predetermined functions plan. This new drawback ‘s the challenge regarding guaranteeing the standard of this new received studies, for instance the potential for extreme performing losings if the bottomhole tape products breakdowns. Therefore, downhole recording (DHR) shall be chosen only if the fresh new dimension address doesn’t fundamentally count on stabilizing moments or when stabilization minutes are usually understood (elizabeth.g., to measure an average tank stress into the a reservoir out of known mobility).

Of numerous business devices give each other SRO and you can DHR. The newest measuring section of these tools is common to help you one another alternatives. Throughout the SRO option, the brand new alarm electronics is actually paired so you’re able to a great telemetry system for uphole transmission, and the wire supplies downhole electricity. From the DHR alternative, downhole batteries supply energy, together with studies try stored in memory chat rooms to have coming readout or getting so you’re able to appropriate personal computers.

The practice of downhole close-within the during best dating sites for 420 singles the a buildup shot unlike body close-into the was talked about in the Stress transient evaluation. Some great benefits of downhole shut-into the tend to be:

  • Control over the fresh new wellbore volume (afterflow)
  • Reduction of the duration of accumulation examination
  • Options into recording form (SRO otherwise DHR)

Downhole closed-in can be performed throughout old-fashioned drillstem examination (DST) or throughout the tests did with the creation wells. In the good DST, the newest downhole sealed-into the device is often the main take to device. Shut-inside is performed at the end of a beat several months because of the actuating the exam device. Generally accumulation pressures is actually submitted in the DHR form. Various other process is by using brand new DST device given that chief shut-from inside the device while the DataLatch electric wireline downhole recorder/sender is utilized to see challenges in real time inside accumulation. DataLatch technology is described after inside webpage.

Into the promoting wells, downhole closed-when you look at the is carried out by the mode a device assembly in the tube in advance of undertaking the test. The fresh tubing must have been in past times armed with locator nipples so your device is going to be secured in the appropriate depth. The latest device was run on possibly an excellent slickline carrying a great DHR pressure determine otherwise a digital line armed with a keen SRO tape determine. The fresh sealed-in the valve is actuated by the a sequence from brings and you may releases with the slickline otherwise cablemonly operated sealed-inside valves is capable of doing regarding the set of doing 12 open-romantic time periods, then brand new device installation is released throughout the mode hard nipples from the the ideal pull on the newest range. Other products off closed-from inside the valves would be run by a clock, quick volatile squib, or battery.

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