by Anna Swierczewski | May 22, 2023 | Technical Papers
READ NOW Abstract A flowback procedure is presented that uses a wellbore model coupled with thermal and fluid modeling to calculate the bottomhole pressure (BHP) and maximize the safe initial production/drawdown without over-stressing and damaging the fracture system....
by laura | Oct 5, 2022 | Technical Papers
READ NOW Abstract This article will address two issues related to sand production in unconsolidated reservoirs. First, it will examine the relationship between formation compressibility (Cf), elastoplastic hysteresis, and the shear failure of the formation...
by laura | Nov 4, 2021 | Articles, Technical Papers
This article, first appearing in Hart’s E&P Magazine, presents a comprehensive analysis of differentiating pressure changes due to wellbore effects from those caused by reservoir responses in pressure-testing of wells. It focuses on the complexities involved...
by laura | Nov 12, 2020 | Technical Papers
READ NOW See the presentation associated with this technical paper here: https://www.odsi-energy.com/ODSI-inertia-derivation-diffusion-equation-presentation See the video associated with this technical paper here:...
by laura | Apr 26, 2019 | Technical Papers
READ NOW Abstract Pressure Transient Analysis (PTA) provides valuable information about the subsurface completion and reservoir. Permanent downhole pressure gauges (PDHG) are not always available in wells. In such cases, wellhead pressure (WHPG) gauges or temporary...
by laura | Oct 27, 2016 | Articles, Technical Papers
READ NOW Abstract With the widespread use of downhole pressure gauges (DHPGs) to measure and record downhole pressures in oil and gas wells, engineers have been able to eliminate/reduce the wellbore effects that can mask true reservoir response. However, not every...
by laura | May 11, 2015 | Technical Papers
The common use of high-resolution tree gauges and downhole permanent pressure/temperature gauges has made it possible to use the measured pressure drop in the wellbore to directly and accurately calculate the gas rate. This is accomplished by first combining an...
by laura | Oct 16, 2014 | Technical Papers
With the advent and common usage of high-resolution tree gauges, downhole permanent pressure/temperature gauges, and continuous flow measurement, many of the common petroleum engineering calculations and analysis tools for production systems can and have been...
by laura | Aug 24, 2012 | Technical Papers
READ NOW Abstract The purpose of this paper is to present a framework to reduce bias in the design and evaluation of hydraulic fractures. When we mention “bias”, we are referring to human nature. If someone knows what the answer is supposed to be (what someone else...
by laura | Oct 2, 2002 | Technical Papers
READ NOW Abstract Operators are often presented with a dilemma when installing instrumentation in a subsea well. Do they install permanent downhole gauges? If so, is there a backup plan in the eventuality that the downhole gauge fails? In the past, when a downhole...
by laura | Oct 2, 2002 | Technical Papers
READ NOW Abstract Since Cullender and Smith(1), surface pressures have been used to calculate bottomhole pressures on shallow, dry gas wells. If the original Cullender and Smith equations are modified to account for produced liquids, the correlation may be extended to...
