1. Objective: DST the 14,000’ sand to evaluate production potential. 2. Well Information Water Depth: 130’RKB to WL: 90’RKB to ML: 220’ MW Drilled With: 17.0 ppgTD: 14,150’MD/TVDPBTD: ±13,960’ MD/TVD Directional Information Vertical Well Casing Size: 26”, 202 ppf , Gr B at 470’ MD/TVDCasing Size: 18 5/8” 87.5# J-55 BTC at 745’ MD/TVDCasing Size: … DST Programme Example

1 General Successful production testing of exploration wells requires the choice of appropriate test string design, equipment and facilities, and strict adherence to safety measures. An integrated planning approach must involve production technology, reservoir engineering, production operations and drilling engineering. Setting clear test objectives which are fully understood by company and contractor personnel is essential. … 01. Introduction to Well Testing

1 General Test objectives can vary from a single downhole sample to an extensive long duration reservoir limit test. This will form part of the well programme. Stimulation and artificial lift are two methods of getting the well to flow; special provision may be required for these. The purpose of a production test is to … 02. Well Testing – Production test objectives

1 Bottom hole pressure and temperature It should be noted that the information given in the following tables only partially shows the expected performance specification of the gauges. Company experiences in the 10,000 psi and 15,000 psi ranges are limited, thus no specific recommendation can be made here. One of the problems associated with the … 03. Well Testing – Production test data acquisition

1. Size of the production test crew A minimum of rig personnel should be on board during well-testing operations. Well test personnel will complement the rig personnel some time prior to the actual test operations and although it is desirable to keep the number of the latter group to a minimum, care should be taken … 04. Well Testing – Personnel and responsibilities

1 General The majority of Well Testing carried out world-wide is in the 5000 psi WP regime. In recent years there has been a need to go deeper with resultant higher temperatures and pressures. A description of equipment follows which essentially covers the 5000 psi through 15000 psi WP range. It is essential to ensure … 05. Well Testing – Equipment description

1 Introduction It is usual to contract out Well Testing Services, including the inspection, testing, drifting of equipment in base workshops and on site. The effort and time spent to ensure the integrity of each individual component used downhole and on surface will impact on the success of a well in minimising downtime. The thorough … 06. Well Testing – Equipment preparation

1 Surface 1.1 Anti-pollution measures It is possible that hydrocarbon pollution of surface waters could occur during production testing. A spill is likely to be limited as the well and production test equipment are constantly monitored and rigged to enable instant closure of the well. Anti-pollution equipment and materials to handle oil pollution must, however, … 07. Well Testing – Operational recommendations

“Health, Safety and Environment” are the aspects of activities which relate to how work is carried out rather than to what is done. They have been grouped together and must jointly be given equal priority with the technical content of any operation. This is a Group Policy and it is a primary responsibility of the … 08. Well Testing – Health, safety and environment

The testing contract strategy is an integral part of the project execution plan. The contract strategy needs to be finalised at the earliest opportunity, i.e. the planning stage. Well testing cannot be viewed in isolation from other facets of the drilling and production operations. The strategy adopted should take into account the other contracting strategies … 09. Well Testing – Contracting strategy