A drill stem test (DST) is a procedure for isolating and testing the pressure, permeability and productive capacity of a geological formation during the drilling of a well. The test is an important measurement of pressure behaviour at the drill stem and is a valuable way of obtaining information on the formation fluid and establishing whether a ...

钻杆地层测试—DST（drillstemtest）是使用钻杆或油管把带封隔器的 地层测试器 下入井中进行试油的一种先进技术。 它既可以在已下入套管的井中进行测试，也可在未下入套管的裸眼井中进行测试；既可在钻井完成后进行测试，又可在钻井中途进行测试。 它们座封隔离裸眼井底,解脱泥浆柱压力影响，使地层内的流体进入测试器，进行取样、测压等。 钻杆 (中途)测试减少了储层受污染的时间和多种后续井下工程对储层的影响，可以有效保护储层，是对低压低渗和易污染油气层提 …

Drillstem tests are typically performed on exploration wells, and are often the key to determining whether a well has found a commercial hydrocarbon reservoir. The formation often is not cased prior to these tests, and the contents of the reservoir are frequently unknown at this point, so obtaining fluid samples is usually a major consideration.

2022年1月24日 · A drill stem test (DST) is a temporary completion of a wellbore that provides information on whether or not to complete the well. The zone in question is sealed off from the rest of the wellbore by packers, and the formations' pressure and fluids are measured.

2015年1月21日 · Drill-stem tests provide the petroleum industry information on three critical properties of subsurface formations —pressure head, permeability, and water chemistry –that the...

2018年1月12日 · Drill stem test (DST) is the conventional method of formation testing and reservoir evaluation which obtains reservoir data under dynamic (rather than static) conditions. A DST is essentially a temporary completion, a method of evaluating reservoir formations without costly and time-consuming completion procedures.

2014年5月31日 · drill stem testing. As offshore drilling increased, floating rigs becam e common, increasing the potential for vessel heave to accidentally cycle traditional weight set...

A drill stem test (DST) is a procedure for testing the wellbore pressure, permeability and productivity of a geological formation during the drilling of a well. The test is important and a valuable way of obtaining information on the formation fluid and establishing a decision whether or not to complete the well.

Used drill stem pipes and sucker rods are used to create drill stem fencing, commonly used to corral horses and other livestock. A drill stem fence is a sturdy, long-lasting, attractive option whether you’re a rancher or just want to spruce up the homestead.

Drill stem testing follows the basic principles of mechanics, hydromechanics, common sense and practicability. This seminar paper will present methods for the quantitative analysis of drill stem test. The drill-stem test operation is divided for discussion into three phases: planning the test, performing the test, and interpretation.