钻杆地层测试 - 百度百科
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 …
Drill stem test - Wikipedia
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 ...
Drill stem testing - AAPG Wiki
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.
(PDF) Drill-Stem Testing (DST) - ResearchGate
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...
Drill-stem testing (DST) is one of the most important completion techniques. It is a type of temporary completion that is used to evaluate the formation and inspect a reservoir’s properties....
Drill Stem Test - an overview | ScienceDirect Topics
A drill stem test (DST) is some form of temporary completion of a well that is designed to determine the productivity and fluid properties prior to completion of the well. Although a DST can be performed in uncased hole (open hole) or in cased hole (perforation tests), the open hole test is more common.
A drill stem test (DST) offers the fastest and safest method of evaluating the potential of a newly-discovered hydrocarbon-bearing formation. After the well has been drilled and cased, the first stage of a well test is to run a DST string in conjunction with a downhole data system with the option to include tubing conveyed sampling
What is a Drill Stem Test (DST) and what data is attainable?
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.
Drill Stem Tests - SpringerLink
2024年1月10日 · Drill Stem Testing provides an opportunity to check the condition and productivity potential of a formation exposed by drilling a well. We can examine the pressure, type of fluid and damage caused during the drilling (DST) is considered an important reservoir evaluation method for early evaluation of hydrocarbon reservoirs.
(PDF) Interpretation of Drill Stem Test - ResearchGate
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...