Ask PERM (Q&A)

/Ask PERM (Q&A)

How to Calculate Water Saturation After Trimming a Plug? | Ask PERM

Julie Asks PERM: After re-trimming, is the water saturation just obtained by the subtraction of the volume of the initial plug to the re-trimmed plug? What I mean is,  As, Sw=Vw/Vpore Sw: water saturation Vw: volume of water collected Vpore: pore volume Can we use this formula after retrimming: Sw = (Vw * Vpa) / (Vp*Vpore) [...]

2016-01-13T17:33:21+00:00 September 21st, 2015|Ask PERM (Q&A)|0 Comments

What Pressure of Gas to Use for Measuring Permeability & Why Does Saturation Not Match Fluid and Gas in Pores? | Ask PERM

Julie Asks PERM: I have two main questions if you could help me: -How to choose the pressure of gas if we want to measure the permeability of a reservoir rock?  -When doing the saturation, is it possible that the pore volume is much higher than the fluid volume, if yes, what could be in the [...]

2016-01-13T17:32:52+00:00 September 1st, 2015|Ask PERM (Q&A)|0 Comments

How to Select Core Dimensions for Laboratory Polymer Flooding Experiment? | Ask PERM

Hamzah from Ryerson University Asks PERM: I would like some guidance with respect to the selection of core dimensions for a laboratory polymer flooding experiment. Throughout my literature review, I have not come across justification for the core dimensions selection. Any assistance regarding this matter would be much appreciated. Thanking you, Hamzah Dr. Jonathan Bryan from [...]

2016-01-13T17:21:57+00:00 July 27th, 2015|Ask PERM (Q&A)|0 Comments

Forced Imbibition During Hydraulic Fracturing for Tight Gas Formations? | Ask PERM

Yahya from Southern California Asks PERM: Hello, I'm currently working on forced imbibition during hydraulic fracture process in tight gas formations. To investigate this phenomena, the reliable relative permeability for water/gas and capillarity pressure data play an essential role. I was interested in the method which you applied for calculating those data for unconventional reservoirs. I really [...]

2016-01-13T17:32:08+00:00 June 25th, 2015|Ask PERM (Q&A)|0 Comments

Measuring Drainage Capillary Pressure vs Wetting Phase Saturation? | Ask PERM

David from Calgary Asks PERM: What methodology would you propose for measuring drainage capillary pressure vs. wetting phase saturation? Typical plug perm is Regards, Dave Dr. Jonathan Bryan from PERM Answers: For tight core plugs our best bet for measuring drainage capillary pressure is through centrifugation. In this approach, we would saturate the core wetting phase [...]

2016-01-13T17:31:38+00:00 May 20th, 2015|Ask PERM (Q&A)|0 Comments

NMR Log T2 Cutoff & Estimation of Permeability? | Ask PERM

Imam from Indonesia Asks PERM: Is it necessary to determine T2 cut off to obtain permeability with NMR logging?  If we don't have any NMR lab measurement data, how to adjust T2 cut off and justification for that?  I am worried when I used default T2 cut off (let's say 33 ms for clastic). I got low correlation [...]

2016-01-13T17:27:45+00:00 April 22nd, 2015|Ask PERM (Q&A)|0 Comments

Vertical Plugs or Horizontal Plugs for Capillary Pressure? | Ask PERM

Mudar Asks PERM: Dear Sir/Madam, I am thinking that to simulate saturation properly in the reservoir by SHF via Pc, it is more relevant to use vertical plugs rather than horizontal as common, because water is sucked up by capillarity force mainly vertically. Please provide your view with explanation. Thanks Mudar Senior Petrophysicist   Dr. Jonathan [...]

2016-01-13T17:24:29+00:00 April 21st, 2015|Ask PERM (Q&A)|0 Comments

Wettability Alteration & Tracer Effects on NMR Readings? | Ask PERM

Castor from UAE Asks PERM: Hello, We will be drilling & coring with a “KPG (KCL-PHPA-Glycol) Low salinity” fluid, with a pH of 9.5-10.  We will use D20 tracers to assess the core invasion of the fluid. However, from the literature I have read the following: “PHPA mud contamination strengthens the wettability of water-wet reservoir [...]

2016-10-25T11:54:49+00:00 April 20th, 2015|Ask PERM (Q&A)|0 Comments

E-MAIL NEWSLETTER

Sign up and NOW to receive the latest news, updates and technological advancements made for the Special Core Analysis & Enhanced Oil Recovery Industry

If you don't sign up, you won't know when the next breakthrough occurs!