Did You Know?

K&M offers a range of training for Drilling and Completion Engineers, Supervisors, Superintendents, Rig Crews and Service Company personnel.

Rotation to Overcome Drag

Rotation is a legitimate way to overcome drag.There is a fixed amount of friction that needs to be overcome to move the string, in any direction. When tripping in, all friction acts in the axial direction, and generates drag. When rotating at a fixed depth, all friction acts in the radial direction, and generates torque.But, …

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ERA Predictive ROP

ERA Software has a Predictive ROP Algorithm – it’s fast and easy to use and one more tool in the box for improving ROP and overall performance improvement. The concept is a simple one, we basically take the MSE Equation and re-arrange it to solve for ROP: Note that there’s a couple of new parameters …

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Connection Under Compression

The time plot below, shows the sequence of the connection at this depth: During connections, setting the slips under compression in high angle wells can lead to a bit / BHA components damage or drill pipe failure. The drill pipe must be set in slips with a tension very close to the Rotating Off Bottom …

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Bottom Hole Circulating Temp

It is possible for the bottom hole circulating temperature to be higher than bottom hole static temperature? This is contrary to popular belief that circulation cools down the well/BHA. The reason that the circulating temperature is higher is because the pressure drop along the drill string during circulation is dissipated as heat energy to increase …

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Lower ECD

Did you know that in a high angle well, poor hole cleaning results in lower ECD? This is contrary to the popular belief that ECD increases when hole cleaning is poor. The reason that ECD decreases with poor hole cleaning is that only cuttings suspended in the mud contributes to ECD while cuttings laying on …

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Torque Friction Factor

In high angle or extended reach wells, Torque is generally not a good indicator of hole condition – in most cases torque friction factors actually REDUCE over the course of a long drilling section. In the example below, a 6000ft section of high angle 9⁷⁄₈” hole was drilled. Right after drilling out the previous casing …

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ERA Circulating Temperature Model

K&M Technology’s Proprietary Software Platform ERA (Extended Reach Architecture) features a “steady state” circulating temperature model that is used to correct fluid density, downhole rheology, and metallurgical properties of tubulars to adjust for temperature effects. The temperature in the well is computed based on the heat transfer between formation, pipe and fluid in the annulus. …

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ERA Sweeps & Tripping Circulations

K&M Technology’s Proprietary Software Platform ERA (Extended Reach Architecture) Sweeps and Tripping Circulation feature allows you to see the pressure (ECD) at any point in the wellbore while a sweep moves through the annulus.
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Built-In Sensitivity Analysis

K&M Technology’s Proprietary Software Platform ERA (Extended Reach Architecture) has a Built in Sensitivity Analysis feature. ERA allows the user to see results with sensitivity to practically any drilling, tripping or cementing parameter. You can choose which parameter to run sensitivity on or rely on ERA’s built in set of standard plots which is populated …

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Time Based Data

K&M Technology’s Proprietary Software Platform ERA (Extended Reach Architecture) Time Based Data feature (imports bulk time data from drilling recorders and filters out T&D measurements and other drilling parameters)
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ERA Wellpath Builder

K&M Technology’s Proprietary Software Platform ERA (Extended Reach Architecture) Wellpath Builder feature builds well paths from scratch using our built-in design profiles. Just choose your desired profile, enter simple parameters, like desired DLS, TVD and Inclination, and ERA calculates the rest for you. Add targets to drive the design and tie into existing surveys. Proximity …

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ERA MSE Downhole

K&M Technology’s Proprietary Software Platform ERA’s (Extended Reach Architecture) Downhole MSE feature can infer downhole mechanical specific energy (MSE) using surface parameters by backing out the drill string’s contribution to surface-measured loads. ERA can also utilize downhole measurement, allowing users to compare two independent methods of calculating MSE at the bit. This approach yields unique …

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ERA VME Limits

K&M Technology’s Proprietary Software Platform ERA’s (Extended Reach Architecture) VME Limit plots show the maximum permissible surface tension and surface torque limits and are plotted alongside expected loads to give engineers and field personnel confidence that operations will not exceed specified pipe limitations, even under complex loading situations.
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ERA Drillers View Plots

K&M Technology Group’s ERA (Extended Reach Architect) Software Driller’s View plots allow the user to see expected loads at the surface as the bit depth increases? This helps identify any discrepancies from normal, which leads to early trouble detection.
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Integrated Geomechanics

K&M Technology Group’s ERA (Extended Reach Architect) Software has Integrated Geomechanics – When basic log data is input, users can build their own mechanical earth model to calculate earth stresses and rock properties, or users can directly enter this data from third party MEMs. ERA will then compute geomechanical limits for any well path. Calculated …

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Dogleg Smoothing

There seems to be a belief that doglegs are “smoothed out” while drilling and especially after casing runs. In the example below, a well was sidetracked due to a shallow fish that was left in hole. The well was a deep TVD well with high tension loads across the shallow doglegs at the sidetrack point. …

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Auto-Fill

Using Auto-fill equipment reduces surge pressures and mitigate risk of mud losses during tight clearance casing deployment? High surge pressure can result in mud losses and formation damage, which can jeopardize successful cement placement and zonal isolation. Accurate modeling of surge pressures with open and closed string set up during planning stage will help you …

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ERA Snapshot View

K&M Technology Group’s ERA (Extended Reach Architect) Software Snapshot View plots allow the user to see loads throughout the string or hole at a specific bit depth. This helps determine exactly where a failure may occur so you can easily design against it.
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ERA Holistic Design

K&M Technology Group’s ERA (Extended Reach Architect) Software focuses on a Holistic Design Structure- ERA’s unique configuration keeps the user centered over the entire well. This approach allows the user to develop the well as a system, rather than focusing on piecemeal components only.
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ERA Execution Mode

K&M Technology Group’s ERA (Extended Reach Architect) Software Execution Mode allows a user to input measured operational data that feeds into ERAs calculation engines, allowing direct comparison between modeled and theoretical loads, normalized for varying parameters as the well is drilled. Loads are also forecasted to TD to allow real-time decision making. This is the …

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Wellbore Surveying

Are you concerned on a challenging geological target interception, or Well collision avoidance? Designing a complex platform exit strategy? Managing your large well surveying database? K&M team has the unique capabilities and expertise to provide support on the key aspects of the Surveying Management Surveying Management Process Advance Surveying Techniques Anti-collision and Survey QA/QC Relief …

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Weak Points

• The weak point of a string won’t  necessarily occur at surface and won’t  necessarily occur in the smaller /  weaker pipe either (if running a taper  string).• In the example shown the weak point  does not occur at surface, nor does it occur in the “weaker” 4½” drill pipe.• …

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Reamers

Running a reamer style shoe often results in the need to ream through horizontal intervals due to their poor bypass area:• Reaming shoes typically have a larger OD than conventional shoes and a reduced bypass area, so there is an increased risk of solids accumulating in front of it, resulting in the necessity to ream.
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Stuck Pipe Incident on a Long Horizontal Well

Did You Know? When you have a stuck pipe incident on a long horizontal well, we are told to work the pipe in the opposite direction to which it was moving when it became stuck. However, if you don’t pick up the pipe enough distance to overcome the drill string stretch, then you might not …

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DID YOU KNOW Max Overpull

Your Maximum Overpull can be well below the tension limit of your drill pipe? That shallow doglegs can greatly reduce your maximum overpull? What is happening: What your drill pipe feels during an overpull even is not just tension – but is a combined load of tension, torque (if present), and bending. Shallow doglegs can cause high side forces and bending stresses! If taking only the drill pipe published tension limit, the example below would think that an overpull of 100 kips (at the bit) is no problem – however, the shallow doglegs and associated bending stresses show that the overpull limit is not felt at surface – but rather at ~1,100’!
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Breakover Torque

Breakover (static) torque after connections can be a reliable indicator that the drill string is getting differential stuck. While drilling, connection practices should be tailored to capture the relevant data:
• Rotate FIRST after a connection  (no up-down movement of the  string)
• Record peak torque (i.e. breakover) values
• Compare to the dynamic off  bottom torque
In this example, there was little difference between the breakover and the off bottom torque in the Claystone section. There was a significant increase in breakover torque from 13,250’ (Friction Factor>0.25) in a clean sand with permeability. On the last two connections at 14,060’ and 14,157’, the static Friction Factor = 0.33 indicating increasing differential sticking while the pipe was stationary

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