Drilling a 4 inch PVC Residential Water Well
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- เผยแพร่เมื่อ 28 มี.ค. 2017
- Willey & Co go through the highlights of drilling a 4" PVC water well on the Delmarva Peninsula.
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My grandfather hand drove our well back in 1940, 70' deep and hit a natural spring... it's the best tasting water in the area, others have deeper wells that smell like sulphur and taste horrible.
That was the only way of doing it for a long time. Thanks for watching.
Nice video, well thought-out and easy-to-follow thanks!
Thanks for watching Leo
Good video...Narrated very good...
Thanks for your support.
That was impressive
Thanks Vodo Engineering. I appreciate the support.
Thanks for the video
Thanks for watching.
Thank you for your video
Thanks for watching.
I notice you used a wing bit to drill the well. We drill wells in michigan done pretty much the way you do. But we use roller carbide button bits. Btw our rig is a gardner denver 1000. Its served the family business very well . our family has been drilling wells over 100 years. Its always nice to see other drillers work
Awesome to have another driller stop by, Thank You. On Delmarva the drilling is pretty easy, its all sand, all the way down. We do have some issues with hole collapse but we can normally keep control of it with drill fluids.
Nice process. The only thing ive done in the past that may be better is to attach the poly line for grouting to the casing as you put it down. You wont have issues not getting your poly down that way.
Your correct. That works great in deeper holes but when we are only going 50-70 foot we can get the poly down by using water and jetting it. Thanks for watching.
Well done!
Thanks for the support
I’ve done large production wells. The annular space is packed a little different. We use super sacs of gravel, sand and mix tons of cement. One thing you didn’t show is sterilization of the well
Your right on, thanks for the catch. We didn't' show the sterilization. We will do a update video with that. Thank You and I appreciate you watching.
Do you ever drill well that overflow.. They all do here, as we are on a low plain, surrounded by hills. Usually our wells can lift the water 20-30 feet just on artesian pressure alone.
We do have artesian wells in Delaware. Their not common but we definitely drill them from time to time.
Pretty cool
Thanks for the support.
that is certainly not the completion of this well . what type of pump? i assume a submersible. how was the hp determined. what is the depth of the water table? i would like to have a closer look at that strainer and i can think of a few more questions that would have made this video a little more informative. otherwise, good show...
Great video ! Is it true that there is water between the aquifers and the ground surface. The reason I ask is our aquifers run between 180' to 220' I have been told that there is "Surface water" that can be used no lower that 100'. Does that make sense to you?
Every area is different due to different geology and hydrology but most acquirer have certain thicknesses and they are separated by silts, clays, and rock.
Do you have to mix the grout to a certain viscosity before you pump it to seal the hole? I think I remember years ago in New Mexico that grout had to meet something called a Marsh Funnel viscosity specification before you sealed hole to total depth.
Consistency / Viscosity are important factors to monitor during the grouting process or big problems can occur.
So you fill the outside of the casing with grout. At the top its like a mushroom head. When the ground freezes and the mushroom head lifts does that cause a problem and allow contaminants into the well? Is this well for drinking or outside watering only? How is the pump attached to the supply line? Do you use pitless adapters?
The clay swells up tight against the well casing and the outside of the drill hole if it’s done properly. That’s why you get the mushroom looking head on the top of the ground. There’s pressure and swelling going on. Methods and materials for sealing wells can be controversial as many studies have concluded different results. Every jurisdiction has their own specific requirements which vary dramatically. A water well in Delaware is basically defined as a hole that intersects natural ground water. Thanks for watching and I appreciate your comment.
How do yall keep the hole from collapsing when drilling or putting the casing in?
In shallow holes the weight of the water itself keeps the hole open in a lot of conditions in our primary drilling area. There are many times as well when we go deeper when we use drill additives to create a thicker water as well as even leave a layer of mud on the sides of the hole to help prevent cave in. There are many drill additives on the market that do very specific things to the water in the system. The water is all basically recirculating while we are drilling so we add the chemicals into the mud pan and it recirculates through the hole by going down the drill bit. Thanks for the question.
Mix bentonite in the wash system.
Hey man that's pretty sweet. I work as a junior well driller here in Michigan, and I really like your rig. I'm working my way into the business and would like to get something like that. Awesome video man, I already know how wells work but it's good to watch stuff like this that might give me a trick or two.
Awesome to have you check out or channel. Thanks for watching and good luck on your journey. Its a hard but great line of work
Is a seal required on top of the gravel pack before you grout? In my line of work, we set piezometers for Geotechnical studies, and often I’ll require a few feet of hole plug on top of the filter sand to prevent mud/grout from getting to my filter sand - this may be overkill
Actually our state regulations mandate the grout to extend from the surface to the top of the gravel pack. I actually wish we had a buffer in the regulations. Thanks for watching.
I was wondering what you do if you hit bad water at a shallower depth, but know from other local wells that the good water is deeper. How do you keep them from mingling?
In Delaware we seal the entire annulus (area between the pipe and the borehole wall) with bentonite from the gravel pack all the way to the surface.
Very interesting video, thanks for sharing. So what was the final cost to the customer for this job?
I'm sorry but we don't discuss pricing on the channel. Thanks for watching.
What prevents the well sides from collapsing when you extract the drill bill, and before you get the well casing dropped into the well? I'm assuming you never hit bed rock on this particular case.
We don't have bedrock in the lower half of the state. There is some in the northern part. We don't offer services that far away. The pressure from the water keeps the hole open. Sometimes we use drilling fluids that are specifically designed to hole the hole open or keep the clay from swelling. Thanks for watching.
What size screen do you use on a project like this
Our standard size screen is a .016. This changes with the drilling conditions but the .016 is a very common screen with our residential applications in lower Delaware. Thanks for your question.
Very detailed video. What class/type of PVC casing would you typically use if you were going say 250 meters underground?
That's 820 feet roughly. We don't typically drill wells that deep on Delmarva. We have an abundance of water in our shallow aquifers. We drill from around 0-420 feet or so. We use sch 40 in those depths. Thanks for watching.
Is it a open holed drill to the bottom and no casing? Is there no danger of cave in before the well casing goes in? Is the ground conditions that hard all the way down? Interesting video
It is an open hole the whole time. The pressure of the water holds the wall open as well as drilling fluids as needed. Thanks for watching.
Nice very well done pun intended almost same procedures with my company was that a portadrill? I have had good luck with my speed stars and you know what I mean by luck If it can happen it will happen and the differences were we have to do 50' seals unless pre aproved with 6sack sand slurry also much larger diameter and depth1625' 18" Johnson 040 wire that's the deepest water well I have drilled
off shore now that's some deep drilling 5 miles also one technical trick you can do I use on every well keeps me out of coming up short is run the casing in a32 to 37 viscosity run trim in the caseing cap the top pump out the trim and up the annulus once 27 vis. has been achieved gravel pack Keep it turning to the right my friend its a tough business but a honest living be safe
Thanks for the support Jake.
So you have to dig through the bentonite to set the house line and pitless?
On Delmarva we have nothing but Sand and Clay for the most part. On the northern part there is some rock but we don't service that area.
Very interesting video thanks for providing it. How deep is the average water well in your service area? Also, how do you determine the drill location on a particular parcel of land?
The average depth well is 50-70 foot. We have lots of shallow aquifer water on Delmarva. Most of the time the deeper wells have more quality risks (Iron, Sulfer, etc). Location is at the owners choice most of the time as long as it meets isolation distances from contamination sources like Septic Systems. Thanks for watching.
Florida puts out a list of licensed drillers and you must choose from the list.
Delaware does the same. Thanks for the input
Great video. The pipe is 4”, what size is the hole? Also does the Bentonite not penetrate the well gravel and screen?
In Delaware we are required to have 1.5" from the outter edge of the casing to the sidewall of the hole.
How deep is the actual well
60’. We have lots of shallow aquifer water on Delmarva. Thanks for watching.
Nice vedio. What about the feed line to the house? Did i miss that?
The video was more focused on the actual well itself but we have other videos showing the hookup side of things.
How heavy is that drill rod 300 lb of peace
The drill rod we are using on this rig are 20’ sticks that weigh just under 300 lbs. Thanks for watching.
Ours are 10 footers, about 60lbs a rod, not to bad we lift individually by hand
You don't have to put steel casing around the pvc?
No, we live on sandy soils with shallow water tables.
What certifications should a well company have if I am looking for a well company?
In delaware you are required to have a license from the Department of Natural Resources. Beyond that I would heavily recommend checking references and experience.
You probably answered this already but how much would a 60 foot well cost.???
Average cost for the well itself without any pumping equipment is $1000-$1200. Thanks for watching.
@@willeyco4458 wow, our price here in the middle of Canada for a well similar to this well would cost 4500.00. That`s with a 5 foot long stainless steel screen that is 5 inches in size and 5 inch pvc casing. Dont`t under price your work fellas, they will only need one well in their lifetime if it is done properly. Keep it turning to the right.
how do you determine the drill site?
Coordination with the owner and regulatory agencies as to where is the optimal location. Its not a real strict process on most drills (meaining theres flexibility) but we have to pay close attention to sources of contamination (like septic systems).
Can anyone drill a well? Do you have to be certified or licensed in the state you are drilling? Here on youtube this guy is building his own house and was going to drill his own well but the state told him it had to be drilled by a certified driller. I imagine it involves sending a report to the state about the quality of the water and making sure the well is over 100 ft. from any septic system along with meeting other setback criteria. Could I just do it and get the results from a lab? Will banks not give you a construction loan if the well is not drilled by a certified driller? What if I ever want to sell the property, and I claim it has a well, but not drilled by a certified driller? If the buyer was getting financing from a bank, I would think the bank would want to see that the well was drilled by a certified driller so they could protect their investment. Are there places that rent out well-drilling rigs? I want to drill my own well on 10 acres I own in northern New Mexico and sell off a five acre piece with a well share agreement. It is in the mountains, so there is a good chance I will be drilling thru rock. Feel free to enlighten me, but I don't have that much money and I wanted to try doing it myself or at least find a way of cutting back on the well expense. The neighbors have been gettin good water at around 300'. Thanks.
I think I can answer a lot of your questions by saying I can only speak for Delaware but I believe most of our surrounding states all follow similar regulations. A well, as it’s defined differently by every jurisdiction, has to be drilled by a licensed well driller due to the fact you are drilling into aquifers which provide water to many many people. The risk of contamination is very high if you don’t do things properly. Our regulations do not allow anyone that isn’t licensed to drill a water “well”. In Delaware that’s pretty much defined as any hole the intersects the natural ground water. Most banks, in my experience don’t require certification that the well was drilled by a licensed water well driller however, they do require a water test of some sort. I’ve never seen a rental company with a true well rig for rent however there are a few that have geo-technical drilling rigs for small size work. Let me know if you have any other questions. Thanks for watching and I appreciate your comment.
New Mexico is terrible for well regulations! If you drill a well and don't follow the guidelines (including drilled by a licensed driller) you could face some serious jail time and a very large fine.
I would suspect as water quality becomes a bigger and bigger issue (it is and will), more states will be cracking down on contractors. Good Luck out there and thanks for stopping by.
Hi how does the dirty water and mud don't get in the water under ground that we drink
The well screen does most of the work but the gravel pack does assist some.
How deep are you able to drill with this and how much drilling can you get done in a day. say 8- 3/4" hole to a depth of 400'
We have drilled down to around 420' however our larger rig (seen in the video) is built to drill much deeper if working properly. On Delmarva we have an abundance of water in our shallow aquifers, deeper holes aren't usually required. How much we can do in a day is highly dependent on specifications of the well as well as the drilling conditions. A 100' deep well in great sandy conditions would take 120 minutes or so while that same well in clays could take much longer. As the diameter of the well increases the time to drill dramatically increases. We recently did a video on drilling some Ag Wells for a Poultry Farm th-cam.com/users/edit?o=U&video_id=W6wXZEahYwA. That job we set our own best drilling record for number of wells drilled in a day. Thank You for watching.
can you do just a casing job and is that cheaper
Hey Tony, I'm not sure what you mean but we can drill just the well and allow another licensed contractor to do the pump work. If thats not what you were asking, please let me know and I'll do my best to answer.
yes thats what i was wondering
What do you do when you lose circulation? I am 120ft deep and my tiny well rig lost circulation
Get it back or you have the rack the rods, fix the problem, and start over.
How many feet can you be from a neighbors well? What could happen if you are let's say 10 feet away from another well?
Wells should be 100' from septic leach fields. That distance can be reduced to 50' if one of several conditions are met.
@@willeyco4458 thank you I appreciate your explanation.
How much does it cost to drill a well like this one in the video?
The well in this video would cost around $1200 US (just the well, no pumping equipment)
I am very surprised it didn't collapse in.
The drilling muds, shape, and water in the hole all assist in keeping the hole open.
Did you use primer?
We use primer on all PVC joints.
I question the grouting the whole well here is why. In many areas you must drill a large pocket below the water sand. If you grout down to the gravel pack in these cases you would be grouting off the watersand. My well here in WV the watersand was 35 feet but its low producing so the well itself is 105 feet this gives plenty of volume to make the well viable. Grouting the way you describe i wouldnt have any water. Here we install a surface casing to bedrock and grout the surface casing only. Then a 4 inch liner pipe is installed to bottom but not grouted then as you did the gravel is put in up over the screen. Anything below the bedrock will not contaminate the well and will be potable.so grouting past bedrock is a complete waste.
On Delmarva we drill in all sand and silts. Its imperative to seal the grounds surface off from all the aquifers encountered during the drilling process. Our regulations require grouting the entire hole. Theres always space between the casing and the borehole. Even if its a very small amount, bacteria and contaminants can drain down the side of the casing and into the aquifer.
@@willeyco4458 different areas and different structural strata does require different ways to construct a safe well. But the one thing that seems should be common no matter where it is, is bedrock. Bedrock is a impermeable layer of thick rock of at least 5 feet. No surface contamination can get past it long as it is properly sealed. So even though you have alot of sand or a strata prone to collapse if you set a surface casing into bedrock and grout it in to surface. They will not be anything from the outside ever get in. The exception to this is when drilling deeper for oil and gas in this case surface vasing must be set well below all fresh water aquifers and cemented back to surface. This is to protect from contamination from the drilling processes and the oil and gas that lays deeper below. Drilling has bern my life a 3rd generation in the field.
Bedrock is incredibly deep in some areas like Delmarva. No water wells that I know of on the lower part of Delmarva are placed in or under bedrock. The northern part of the peninsula has much shallower bedrock. We confine wells on the lower shore by placing them under clay layers. Clay layers are what separate our aquifers. Drilling conditions change dramatically depending on location. Thanks for watching.
Why doesn’t the hole you made just collapse. I dug an 8’ hole and that’s as deep,as I could go because the walls collapsed.
drilling muds, the shape of the hole, and water all keep the hole from collapsing. In very sandy soils we have to use thicker drill muds.
Good Evening -
I live in a residential neighborhood constructed in 1970. At that time there were no public sewer lines in the neighborhood. All homes at that time had septic tanks buried it their front yard. Around 1977, the township put in a public sewer line and everyone in the neighborhood hooked into it. All septic tanks were left in the ground. I want to have a well drilled in my backyard but the only access is through the front yard and over the part of the front yard where the unused septic tank is located. My concern is that the extremely heavy drilling equipment with cause the unused septic tank in my front yard to collapse, potentally resulting in damage to the drilling truck.
My question for you is whether there is well drilling equipment, including trucks, that are light enough to avoid crushing my front yard?
In Delaware, any abandoned tank or vault of some kind must be either removed or filled with sand. That helps prevent these types of issues. There are well rigs light enough to travel across unstable ground but I doubt any driller will want to run their incredibly expensive Rig across or near a known potential for damage. Thanks for the quiestion
If you plan on living in that house for a while, you might be better off to just deal with that old septic tank now. Those old septic tanks are typically made of concrete and of varying quality. If you have seen a 50 year old concrete sidewalk or driveway, that would give you some idea of what condition it might be in. You could probably get an excavating company to remove the lid and fill it with sand and replace the lid for less than $1000 depending on your area,
@@willeyco4458 Thanks for your response. I obtained from my Township the application for the permit to install the septic tank on my property 50 years ago. The tank is nowhere near well drilling equipment would have to pass over to access my backyard. At this point, my concern is that the mud and cuttings involved in the drilling process will run off onto my backyard neighbors property. Can that be prevented or contained?
To think, when I was a kid we drank water from a hand dug well that was about 50 - 60 feet deep. Gravel driveway and 1,000 gallon underground heating oil tank less than 50 feet away
Times and perspective are always changing. Thanks for watching.
Just glue the joints of casing not threaded joints????
We use both primer and glue on all pvc joints. We often use clear primer but we do use purple as well from time to time.