ProPetra MiLog

Normally i talk about reservoir stimulation and engineering topics, but today i am discussing something very unique - something that I feel personally intrigued about. It is the use and key role of weight gauge in well intervention activities (such as slickline jobs, wireline jobs and even drilling

In many unconsolidated and lose sand reservoirs sand production is a common phenomena. Sand production is always undesirable since it causes loss of production, costly work overs due to completion integrity issues and damage to surface production setup. Different methods are engineered to arrest or

Crude Oil Prices benchmarked to WTI (West Texas Intermediate) in the United States  has historically shared a negative correlation with the US Dollar explaining up to 76% of the relationship. The reasons for the negative relationship are as follows: 1. Commodities are denominated in the USD as a

Pressure-Volume-Temperature analysis is a vital component in subsurface engineering and any description of reservoir or reservoir fluids will require PVT analysis. Generally, the purpose of conducting PVT analysis on fluid samples is to characterize the fluid and understand its various properties su

Reservoir stimulation are very common, most of the time conducted to improve the deliverability of reservoir. Stimulation can be generally divided in critical-matrix stimulation and deep reservoir stimulation. Acid stimulation in sandstones and carbonate reservoirs is an example of the first type wh

G-function analysis is a type of fracture fall-off data analysis technique that is used to identify pressure leakoff mechanisms and evaluate if fracture closure has occured. G-function is basically a dimensionless time function which was designed in such a way that when pressure data is plotted agai

Dear Propetra, we recently conducted a pressure buildup test in one of our sandstone well, the data when analyzed on ecrin software has characteristic trend that shows 2 iarfs (horizontals). We are confused between 2 layers and a radial composite behavior as possible diagnosis. How can we narrow dow

What is foam fracturing? is it an alternative to the conventional fracturing fluid and fracturing technique?

I have read some of the blogs at your website. This is a good initiative to learn and share e&p knowledge. I would like to contribute a blog as a guest writer, do you accept such requests? Regards Sadiq

Hello, we are about to perforate a sandstone reservoir around 5000ft deep. However the hole condition is not good therefore perforating efficiency is questionable. What do you recommend as actions to ensure maximum efficiency from these perforation?

What are the limitation of ESP pumps?

Dear Propetra, read the articles on minifrac in this site. Wondering what are the tools available to analyse minifrac data?

Crude Oil Prices after years of stability fell from $115 Per Barrel in June 2014 to $48.79 in January 2015. Prices continued to fall to record low level of $28.94 Per Barrel in January 2016. Organization of the Petroleum Exporting Countries (OPEC) failed to curtail oil production and maintain oil pr

Driving Safety In our industry quite a few accidents took place due to driving negligence and slackness. Many reputable oil & gas companies have pretty strict driving policy and they encourage driving defensively in all situations. Defensive driving aim is to reduce the risk of collision by antic

When determining crude oil price, it is typically referenced to a predetermined category of crude oil both widely accepted and actively traded. It is a misconception that there is single market index/benchmark to crude oil price. The most acknowledged benchmarks are Brent Crude Oil, WTI Crude Oil a

Hydraulic fracturing or fracking as it is commonly known is a technique in which high pressure fluid with sand is used to crack open hydrocarbon bearing formations that have very low permeability and cannot flow on its own. The Shale reservoirs, like Barnett Shale, Eagle Ford Shale & Montney Formati

Tree Saver is a tool that is designed to isolate wellhead from being exposed to the high pressure during frac/injection job execution. This is achieved by using a smaller ID circular pipe that has sealing mandrels attached to the outside of this pipe. The tool is rigged up on the wellhead, from the

Hello, Is the phenomenon of wellbore storage depends on fluid type of reservoir? How does it effect well-test design?

Hello, I want to analyze a well-test that was acquired in a shallow sandstone reservoir. The well is located very near to the well, and just further away from that fault is another fault. We believe one of the faults is leaky as bourdet derivative suggest one fault character. Is there a technique to

Gentlemen We are dealing with an exploratory target zone where the fluid type is known. DST was conducted in this well and in short production period, we produced both oil & gas from this zone. Detailed PVT analysis was not possible on these samples due to business concerns. I am trying to construct

Folks, We are trying design a welltest to estimate reservoir parameters of a sandstone reservoir divided in two zones. The reservoir has a gas cap and oil leg,both of which are perforated. Should we design the test using two layer model? Should we give any consideration to the fact that reservoir

Kudos team Propetra. Your blog on minifrac analyses should also discuss modeling of entry friction in detail.

Can we install plunger lift without workover?