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Well Testing Cheat Sheet (DRAFT) by

The basic well testing procedure

This is a draft cheat sheet. It is a work in progress and is not finished yet.

Purpose of Well Tests

A properly conducted well test is a temporary completion of a well to acquire dynamic rate through time, pressure, and fluid property data.

Well Test Objectives

Short Term
Short-term well test objectives typically involve gathering and analyzing sufficient well data to obtain a descri­ption of the reservoir system in the vicinity of the wellbore
Long Term
Long-term well test objectives focus on gathering and analyzing data to obtain a complete descri­ption of the reservoir. The test time required to satisfy the test objectives varies for each reservoir. These test times are directly related to the testing costs and data needed. Therefore, testing times are a principal concern for the company conducting the test.

Open Hole x Cased Hole

Equipment That I Know

Cased Hole
The RTTS packer is a full-o­pening, hookwall packer used for testing, treating, and squeeze cementing operat­ions.
The internal pressu­re-­ope­rated (IPO) circul­ating valve is a single­-shot circul­ating valve which allows circul­ation through the workstring before trip-out and serves as a drain valve during trip-out.
The drain valve consists of a ported body, sliding sleeve, and rotating nut, which controls the position of the sliding sleeve.
Open Hole
The hollow plug impact reversing sub is used in the more difficult operations where depth and high-p­ressure differ­ential across the plug sometimes make it difficult to open a conven­tional reversing sub.
The HYDROS­PRING® tester was developed to provide a reliable and field-­proven downhole master valve.
An extension joint provides 36 in. of free travel to aid in closing the HYDROS­PRING® tester without removing weight from the packer.
The dual closed-in pressure (DCIP) valve provides for two flows, two closed-in periods, and one reverse circul­ation position. This valve is run above the HYDROS­PRING® tester and uses pipe rotation to operate.
The VR safety joint is a compact, right-hand safety joint used in the drillstem testing string. It is run immedi­ately above the packer assembly to ensure that a minimum number of tools are left in the hole if it becomes necessary to release the safety joint.
The non-ro­tating (NR) expanding shoe wall packer assembly is designed to isolate the zone of interest from hydros­tatic pressure.
The flush joint anchor provides support for the weight of drillpipe needed to collapse an openhole packer.