Logan Pump & WellJet: New Well Development

CJ Logan Pump & Electric teamed up with WellJet to aid development in a new agricultural production well drilled by Superior Well Drilling in the Bakersfield, CA area. The well was drilled in 2015, to a total depth of 700', with an ID of 15.5".  SWL was 200'.  A total of 450' of perforations, alternating Johnson Well Screen with vertical slots, extended from 250' to 700'.  The pump was set at 500'. Normal well development methods produced unsatisfactory results:  the pump was breaking suction at less than 250 gpm, with a drawdown of 300', for a Specific Capacity of 0.83.  Such performance would be woefully inadequate for the well's intended purpose of irrigating thousands of newly and soon-to-be-planted nut trees. Colby Logan, of CJ Logan Pump & Electric, suggested bringing in WellJet to break up the residual drill mud that had created a barrier of mud cake between the formation and the filter zone, had cemented the gravel pack, and clogged the … [Read more...]

“Same As When New”

WellJet & Rottman Drilling Team Up on a Ventura County Ag Well Rehab The Cole family knows avocados.  In addition to serving Calavo Growers as Chairman and CEO, Lee Cole has been avocado ranching in Santa Paula, California for decades.  Lee's son, Guy, manages the family ranch. Despite the crippling drought that clutches all of California in its grim talons, the Cole Ranch is blessed with abundant groundwater supplies.  The "Big Well," drilled in 2000, is 365' deep, with a diameter of 13.25".  It produced in excess of 1,000 gpm when new, with 100' of drawdown. Recently, production and efficiency began to decline.  The bowls were lowered twice - from 140' to 180', and then again to 260'.  But even so, production dropped to less than 700 fpm - with drawdown exceeding 250', so that the pump was breaking suction. Early 2015 downhole video by Pacific Surveys showed a static water level of 64', with vertical slot perforations from 86' to the bottom of … [Read more...]

In Memoriam

WellJet Mourns 2015 promises to be a busy year for WellJet, but all of us go forward in sadness at the loss of two of our leaders and friends - General Manager Paul Phelps, and company patriarch Harry Glass. We will miss Paul's ebullience, positive energy and multi-faceted practical skills.  More than just our GM, Paul was a friend who made every day better for those with whom he worked.  And we will miss Harry's wisdom, inspiration and no-nonsense style.  Harry was not only WellJet inventor Jeff Glass's father and principal supporter.  He was Jeff's best friend, mentor and guide.  Paul and Harry were always there for us.  Now we must be there for them.  Rest in Peace, Dear Ones.  You will always be in our hearts. … [Read more...]

California Hat Trick

Three WellJet Rehabs Produce Outstanding Results WellJet recently teamed up with LO Lynch Quality Wells & Pumps, and Desert Water Solutions, to rehabilitate three wells in Southern California. The combination of WellJet to break up obstructions, WellWorm to pull dislodged material from the gravel pack, and Redi-Clean Chemicals to kill bacterial colonies, once again proved a potent 1-2-3 process. Thermal This was a mild steel ag well; drill date unknown. 14” OD, TD 433’, Louvers from 352-433. Prior to rehabilitation, production was 300 gpm with approximately 85’ of drawdown – for a specific capacity of 3.5.   The result was 1,000 gpm – with less than 40 feet of drawdown, for a specific capacity of 25… an improvement in efficiency of 714%. … [Read more...]

Empire Pump & WellJet Team Up

Meeting the Challenge of Rehabilitating a Lined Well When it comes to rehabilitating lined wells, there are two rules of thumb: a liner will buy you five years, and mill slot liners are the hardest to rehabilitate. Well #2 for Rose Valley Water in Peoria, AZ was 10 years old, with mill slot perfs. Well #2 was drilled in 1997, to a total depth of 908’. The original diameter was 20”, with mill slot perforations 550’ to 720’. The well originally produced 600-700 gpm. Production began to drop off after a few years, and the well started making sand. A 16” liner was installed in 2004, with mill slot perfs from 640 to 908. The well went back on line, and produced approximately 500 gpm. Over the next several years, production declined, and the well again started making sand. Output fell to 210 gpm, with drawdown of 185 feet, for a specific capacity of 1.1. Downhole video revealed plugged slots, numerous nodules and heavy encrustation. Rose Valley … [Read more...]

Central Valley Success

California's Central Valley contains the most productive agricultural land in the world. Its combination of good soil, mild climate, available water, and - most importantly - highly skilled, experienced and innovative farmers and ranchers has made the region America's breadbasket - and the envy of the world. Bob Giacomazzi & Sons have been farming in the Central Valley for many years.  They have survived - and thrived - through the inherent challenges in working the land in good times and in bad. An epic drought has held the Southwest in its suffocating grasp for the past three years. Valley farmers have been forced to be more creative than ever in growing the crops that feed the nation.  Conservation, advanced irrigation techniques, and efficient use of groundwater have been key. Glen Myers of Myers Brothers Drilling installed the 4th Avenue Well for Giacomazzi & Sons in 2000.  Glen's vast knowledge and decades of experience in the area … [Read more...]