The third type has double porosity system, and the build-up curve has a stepwise form.
缝洞孔复合型具有双重孔隙介质的特点，压力恢复曲线具多台阶型。
Unsteady testing for oil and gas well includes testing of drawdown curve and build-up curve.
油井和气井的压力不稳定测试，包括压降曲线测试和压力恢复测试。
The first and second derivative plates of concave pressure build-up curve are presented in this paper.
本文提出了凹型压力恢复曲线的一阶导数图版和二阶导数图版。
Based on these, the new method that pressure build-up curve associated with pressure fall-off curve to determining the productivity of gas well is proposed.
在此基础上提出了用不稳定试井资料确定气井产能的新方法，即用压力恢复曲线法与压降曲线法相结合确定气井产能的新方法。
Based on a lot of data of pressure build-up of gas fields in Sichuan, the types and characteristics of pressure build-up curve of fractured reservoirs are discussed in this paper.
本文根据四川气田大量的压力恢复数据，讨论了裂缝储层压力恢复曲线的类型及其特征。
The maturity of various credit rating bond is more abundance will help to build up a rational corporate bond yield curve, and provide pricing benchmark for secondary market circulation.
各信用评级的发行期限更为丰富与完整，将有利于形成合理的公司债券收益率曲线，为二级市场流通提供定价基准。
The new achievement of CAGD field has been introduced to build up the mathematical model of vehicle body appearance curve and surface.
本文引入CAGD领域研究的新成果构造车身外形曲线曲面数学模型。
Using Lasels analysis method of afterflow for reference, pressure build up curve of shut in well is linearized and rheological parameter is calculated.
借鉴拉塞尔的续流分析方法，将焖井恢复压力曲线线性化并计算出流变参数；
This tech can be used before or after the reform measure and a satisfying build-up pressure curve can be measured.
该技术在改造措施前后均可进行，均可测得满意的压力恢复曲线。
This tech can be used before or after the reform measure and a satisfying build-up pressure curve can be measured.
该技术在改造措施前后均可进行，均可测得满意的压力恢复曲线。
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