Real-time, at-bit Geosteering for Coiled Tubing Drilling

18th Apr 2018

When drilling a directional well, predicting the exact position of a target reservoir from surface is difficult. Logs from . . .

Find Your Reason Why! Well Selection For UBCTD

11th Apr 2018

A directional coiled tubing drilling string comprises a number of highly specialised components working in unison. One of the more interesting components is . . .

What Is An Orienter?

28th Mar 2018

A directional coiled tubing drilling string comprises a number of highly specialised components working in unison. One of the more interesting components is . . .

Convert Your CT Unit To E-Coil

8th Feb 2018

Upgrading a coiled tubing unit to e-coil can add valuable versatility to a company’s service offering. The ability to transmit and . . .

Reservoir Characterisation While Drilling Underbalanced

1st Feb 2018

Drilling underbalanced on coiled tubing provides a treasure trove of information on reservoir characteristics and . . .

The Importance Of A Gyro In A Coiled Tubing Drilling BHA

6th Dec 2017

If you've spent any time looking into directional measurement instruments, and particularly gyros then you'll know that there are two main types of . . .

Modelling And Visualisation Of Drilling A Horizontal Well

29th Nov 2017

Let us recall that in academic and engineering contexts, a model is a construct which encapsulates the essential features of a . . .

Exploring The Mechanism Of Coiled Tubing Lock-Up

2nd Nov 2017

Lock-up in CT is like death and taxes, it’s an inevitability of life. If you are going to try and set weight at the end of CT, the amount of weight you . . .

Applications For Coiled Tubing Drilling

18th Oct 2017

With over 70% of the world’s oil and gas production being produced from mature fields, it’s not surprising that operators are looking at . . .

Horizontal Directional Drilling: What's The Benefit?

11th Oct 2017

Since the early days of the oil industry, operators have been drilling vertical wells to tap oil and gas reservoirs. The advantages are . . .

Lesson 101: Setting Up And Operating      A Test Facility For HPHT Equipment

27th Sept 2017

Coiled Tubing Drilling is increasing in demand which is creating the need for tools to have higher downhole capabilities.  Specifically, the . . .

The Importance Of Near Bit Sensors

19th Sept 2017

There is a reason why the drivers of 18-wheeler trucks are seated at the front of the vehicle. It’s so the drivers can steer the vehicle accurately between . . .

Openhole Sidetracking Using Coiled Tubing Drilling

26th July 2017

When planning an openhole sidetrack there are a number of choices to be made which will affect the ease and speed at which the . . .

Combating Lost Circulation Using Underbalanced Drilling

21st July 2017

A On November 20, 1980, Leonce Viator Jr, accompanied by his nephew, took his boat out onto Lake Peigneur in Louisiana to catch some catfish. At the same . . .

How Do You Drill A Directional Well With Coiled Tubing?

12th July 2017

A Directional Coiled Tubing Drilling (DCTD) BHA is made up of the following components: bit, motor/turbine with bent housing, sensor module . . .

How To Mill More Efficiently

5th July 2017

Frac plug milling is the final step on the journey to completing a shale producer.  Return on the investment that has gone in to drilling the well and pumping the . . .

How To Drill Faster With Coiled Tubing

28th June 2017

We often get asked what is the effect of underbalance on ROP, so it’s nice to have a real-life example which shows the difference it can make. In this example . . .

Introduction to CTD Wellbore Hydraulic Modelling - Part Two

22nd June 2017

In my last blog post I introduced the principles of hydraulic modelling for coiled tubing drilling. I left you with this beautiful chart, depicting . . .

Selecting a Coiled Tubing Unit for CTD: ParModelling - Part One

19th Apr 2017

In order to select an appropriate coiled tubing unit (CTU) and CTU provider for CTD operations, a few key steps must be taken, with focus on . . .

Introduction To CTD Wellbore Hydraulic Modelling - Part One

29th Mar 2017

In the last article I introduced the importance of modelling in the context of Coiled Tubing Drilling and explored how fit-for-purpose . . .

How Computational Modelling Contributes To Planning A Successful CTD Campaign

17th Feb 2017

As anyone with a succession of successfully executed Coiled Tubing Drilling jobs under their belt might tell you, ‘Coiled Tubing Drilling is . . .

Jointed Pipe Versus Coiled Tubing Underbalanced Drilling

1st Feb 2017

Underbalanced drilling (UBD) is defined as drilling when the effective downhole circulating pressure of the drilling fluid is equal to. . .

Benefits Of Drilling A Straight Hole With Coiled Tubing Drilling

25th Jan 2017

In conventional directional drilling with a bent-sub motor the well trajectory is drilled with a combination of sliding stages and rotating stages. This . . .

Why A Downhole WOB Sensor Is So Important When Drilling With CT

28th Nov 2016

A direct measurement of downhole weight-on-bit is vital for accurate control of the drilling process during Coiled Tubing Drilling. Without it. . .

What Is Underbalanced Drilling

28th Nov 2016

Underbalanced drilling is when the pressure in the formation is greater than the hydrostatic pressure in the bore hole. This difference in. . .

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