The Driller
  • Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
  • CLASSIFIEDS
  • EQUIPMENT
  • SAFETY
  • VIDEOS
  • EDUCATION
  • SOURCEBOOK
  • EVENTS
  • SUBMIT
  • ABOUT
  • SIGN UP
cart
facebook twitter linkedin youtube
  • NEWS
  • Water
  • Geothermal
  • Construction
  • Environmental
  • Mining
  • All Industry News
  • EQUIPMENT
  • Rigs & Heavy Equipment
  • Consumables
  • Pumps
  • Featured Products
  • VIDEOS
  • Newscast
  • Drill Talks
  • Ask Brock
  • Emerging Drillers
  • EDUCATION
  • Drilling Business Insights
  • Reference Desk
  • Sponsored Insights
  • EVENTS
  • Conferences & Demo Days
  • Newscast LIVE
  • SUBMIT
  • Drillers @Work
  • ABOUT
  • Contact
  • Advertise
The Driller
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
The Driller
  • NEWS
    • Water
    • Geothermal
    • Construction
    • Environmental
    • Mining
    • All Industry News
  • CLASSIFIEDS
  • EQUIPMENT
    • Rigs & Heavy Equipment
    • Consumables
    • Pumps
    • Featured Products
  • SAFETY
  • VIDEOS
    • Newscast
    • Drill Talks
    • Ask Brock
    • Emerging Drillers
  • EDUCATION
    • Drilling Business Insights
    • Reference Desk
    • Sponsored Insights
  • SOURCEBOOK
  • EVENTS
    • Conferences & Demo Days
    • Newscast LIVE
  • SUBMIT
    • Drillers @Work
  • ABOUT
    • Contact
    • Advertise
  • SIGN UP

Critical Path Drilling

By Wayne Nash
August 1, 2004
Wayne Nash offers sound advice on reducing drilling time...and shares a recent adventure.

Effectively separating checklist items from critical path operations can significantly impact the time it takes to drill a well.
We all know that bit-on-bottom time is what makes rigs money. This means that if you're drilling and making productive hole, you're probably making money. The problem is there are a lot of steps to a successful completion other than just drilling. The ability to maximize drilling time and minimize other activities makes a huge difference in your bottom line; this is called “critical path.” The critical path starts when you leave the yard and ends when you leave the job with a completed well. Anything that interferes with the critical path needs to be looked at closely.

For instance: Do you fuel the rig on the way to the job or on the way back? If you stop to fuel on the way to the job, you have just increased your critical path time by 15 minutes to 20 minutes for no reason. If the rig left the yard full, you could save the time. Fuel up on the way in - it is something that needs to be done, but it doesn't interfere with drilling. It is a checklist item. Do it outside your critical path.

Drill water: Do you rig up and get everything ready before you start hauling water and mixing the mud? Chances are this is going to take a bit longer than hooking up a few hoses. So, if the longest (time-wise) thing you have to do is get up mud, start it first; you can do all that other stuff along the way. It shortens the critical path.

When drilling ahead, and it's time to make a connection, is the next joint doped? Picked up? Ready? It's a lot like a NASCAR pit stop - don't start looking around for the jack after the car is stopped!

When it's time to come out of the hole: Are the breakout tong dies sharp, or do they need to be changed? Are the tongs oiled? If you pump a slug, is it ready? Are the slips doped up? Do you stop in the middle of a trip to go hunt parts, or does your helper get a new pair of gloves? All of this interferes with the critical path.

Running casing: Is the string laid out, tallied, lugs welded on, whatever? Are the handling tools ready, or do you have to hunt them?

The point is: Focus on the objective - a completed hole. I've seen drillers pull out of the hole two joints shy of the casing point because it was lunch time, only to spend the rest of the afternoon reaming back to bottom, to get where they were at 11:45 a.m.

The ability to separate checklist items - things that have to be done, but not necessarily at a particular time - and critical path operations can make a significant difference in the total time spent drilling a well. While doing a task, a good driller generally is thinking of the next phase of the operation and preparing for it. I've seen oilfield companies actually graph this out in such a way that they can identify which parts of the operation contribute to overall time savings and which parts are time wasters. This is one reason the total completion time for well in the 'patch continues to go down. The bits still are drilling at about the same penetration rate, but the job is getting done sooner. This practice contributes directly to the bottom line and applies to us in the water well industry, too.

On a side note, just so y'all didn't think I was all technical and serious and stuff: We recently had the G8 Summit down here in Georgia. What a letdown. The authorities were all geared up for massive protests that never materialized. We had a reported 17,000 military and police in our little ol' county - and about 25 hippies. They blocked access to places, X-rayed all trucks, searched cars and generally made the place look just like occupied Baghdad. Dunkin' Donuts was safe … No trouble at all, except for a complete disruption of the ability to do business on the island.

I scheduled some work way out in the woods at the end of a dirt road, locked the yard and hunkered down. The only interesting thing I had happen was, one day I was on my way to town and noticed a long convoy of state troopers coming up behind me, headed for duty. I eased over to let them by. The road was a four-lane with a 45-mph speed limit, but these guys were running about 75 mph. I've always figured that it was pretty well acceptable to run with the flow of traffic, so when the last one passed by, I just naturally fell in with the “flow of traffic.” Took about 2 miles before one of the good-ole-boys fell in behind me and pulled me over. Wanted to know what I thought I was doing - “Going with the flow of traffic,” I informed him.

He wanted to know if I knew what the speed limit was. (I knew as well as he did - we all were ignoring it by mutual agreement!) I told him I figured it was kinda like a caution flag at Talladega - as long as you don't pass the pace car, you're OK. Heck, I wasn't passing! After being properly chastised, he let me go with a “Slow that thang down!”
ND

Share This Story

Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!

Wayne nash 200px
Wayne Nash is a regular contributor to The Driller. He can be reached at rockbit8@hotmail.com.

Recommended Content

JOIN TODAY
to unlock your recommendations.

Already have an account? Sign In

  • geotechnical drilling rig

    6 Onsite Phrases Environmental Drillers Hate

    Here are six phrases that highlight common frustrations...
    Geotechnical Investigation
    By: Jeff Garby
  • Wayne Nash

    Pipe Stuck? Common Causes and Solutions for Drillers

    If you have drilled for any length of time, sooner or...
    Oil & Gas Drilling
    By: Wayne Nash
  • submersible pumps, water well pumps

    Selecting and Sizing Submersible Pump Cable

    This article helps pump installers and servicers decide...
    Pumps
    By: Bob Pelikan
You must login or register in order to post a comment.

Report Abusive Comment

Subscribe For Free!
  • eNewsletters
  • Online Registration
  • Subscription Customer Service
  • Manage My Preferences

The Driller Newscast: 21st Century Drillers | Part 1 DEMAND

The Driller Newscast: 21st Century Drillers | Part 1 DEMAND

The Driller Newscast: New York Geo Talks 2025 Conference with Hands-on Driller Education

The Driller Newscast: New York Geo Talks 2025 Conference with Hands-on Driller Education

The Driller Newscast: Coiled Tubing Drilling and the Future of Geothermal

The Driller Newscast: Coiled Tubing Drilling and the Future of Geothermal

The Driller Newscast, Episode 147: Global Geothermal Collaboration at NY-GEO 2025

The Driller Newscast, Episode 147: Global Geothermal Collaboration at NY-GEO 2025

More Videos

Sponsored Content

Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to the The Driller audience. All Sponsored Content is supplied by the advertising company and any opinions expressed in this article are those of the author and not necessarily reflect the views of The Driller or its parent company, BNP Media. Interested in participating in our Sponsored Content section? Contact your local rep!

close
  • demo of a DM450 drilling rig during a customer factory visit
    Sponsored byGeoprobe

    Built for You: Smarter Drill Rigs, Stronger Support, Bigger Opportunities

Popular Stories

MainPhotoTwoBrothers.jpg

Two Brothers' Journey Through the Drilling Industry

Tariffs

Tariffs Shake Up the Drilling Industry

AI and Drought Concerns

AI’s Growing Thirst for Water and Power

The Driller Classifieds

COMPRESSORS

EAST WEST MACHINERY & DRILLING IS BUYING AND SELLING AIR COMPRESSORS, AIR BOOSTERS, AIR ENDS & PARTS
Company: East West Machinery

DRILL RIGS

LOOKING FOR LATE MODEL TOPHEADS & DRILLTECH D25'S
Company: Spikes’s Rig Sales

DRILL RIG PARTS

MEETING DRILLERS NEEDS AROUND THE WORLD
Company: East West Machinery

ELEVATORS

SEMCO INC. PIPE ELEVATORS
Company: Semco Inc.

GROUTERS

GROUTING EQUIPMENT - GROUT PUMPS & GROUT HOSE REELS
Company: Geo-Loop Inc.

PUMP HOISTS

SEMCO INC. - BASIC PUMP HOISTS
Company: Semco Inc.

WELL PACKERS

LANSAS PRODUCTS - INFLATABLE WELL PACKERS
Company: Vanderlans Lansas Products

WELL SCREENS

WELL SCREENS & SLOTTED PIPE
Company: Alloy Screen Works

Products

Water Quality Engineering: Physical / Chemical Treatment Processes

Water Quality Engineering: Physical / Chemical Treatment Processes

By carefully explaining both the underlying theory and the underlying mathematics, this text enables readers to fully grasp the fundamentals of physical and chemical treatment processes for water and wastewater.

See More Products

Subscribe to The Driller Newscast

Related Articles

  • Groundwater depletion crisis.jpeg

    Groundwater Depletion: A Looming Crisis and the Path to Sustainability

    See More
  • Authentic Drilling crew in the field

    Colorado Drilling Contractor Charts Her Path in Environmental, Geotech

    See More
  • safety on drilling site

    On Drilling Jobs, Tracking Near Misses is Critical

    See More

Related Products

See More Products
  • drilling.jpg

    Clay Science in Drilling and Drilling Fluids

  • deepwater.jpg

    Deepwater Drilling 1st Edition

  • 9780128034170.jpg

    Formulas and Calculations for Drilling, Production, and Workover, 4th Edition

See More Products
×

Dig deeper into the drilling and water supply industry!

Build your knowledge with The Driller, covering the people, equipment and technologies across drilling markets.

SIGN UP NOW
  • RESOURCES
    • Advertise
    • Contact Us
    • Directories
    • Store
    • Want More
    • Classifieds
  • SIGN UP TODAY
    • Create Account
    • eNewsletters
    • Customer Service
    • Manage Preferences
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey/Respondent Access
  • STAY CONNECTED
    • LinkedIn
    • Facebook
    • YouTube
    • X (Twitter)
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY

Copyright ©2025. All Rights Reserved BNP Media.

Design, CMS, Hosting & Web Development :: ePublishing

The Driller
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
The Driller
  • NEWS
    • Water
    • Geothermal
    • Construction
    • Environmental
    • Mining
    • All Industry News
  • CLASSIFIEDS
  • EQUIPMENT
    • Rigs & Heavy Equipment
    • Consumables
    • Pumps
    • Featured Products
  • SAFETY
  • VIDEOS
    • Newscast
    • Drill Talks
    • Ask Brock
    • Emerging Drillers
  • EDUCATION
    • Drilling Business Insights
    • Reference Desk
    • Sponsored Insights
  • SOURCEBOOK
  • EVENTS
    • Conferences & Demo Days
    • Newscast LIVE
  • SUBMIT
    • Drillers @Work
  • ABOUT
    • Contact
    • Advertise
  • SIGN UP