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HH has permission for a number of HGV's per day during different phases and periods of operation. They don't define between tankers, cranes, lorries etc.
HH already has permission for the injection. The EA are responsible for the quality and has been applied for. Water has to meet a standard no matter where it comes from and that includes rain water from on site. "Water will need to be cleaned to injection quality (solids, bacteria control etc.) and injection placement to be considered."
ibug, thanks for your reply.....at the same time as the re-injection would the well be recharging naturally also.....sorry if this question sounds daft, but if you don't ask you don't find out the answers
You forgot OGA figures for production next week....................
"As I have little technical knowledge of oil wells is it possible that with HH2 shut in that the water ingress from the HH2 well will pass though the slotted liner into the natural fractures to replace some of the void in the reservoir?"
With HH2z shut in those parts of the well in communication with the rocks - through the slotted liner or otherwise - will be at the same temperature/pressure as the surrounding rocks. The water coming into HH1 is from a large area around HH - there may be a local pressure sink but water will continue to flow towards HH and into any flowing well. You may see a small drop in pressure in the HH2z bore but its very local.
Pressure support for the Portland will require them to put in at least as much as they're taking out - the danger is the water circulates quickly back to the producer through the high permeability streaks and you're faced with a rapidly increasing water cut , with oil left behind in the less porous rocks
Likely calendar: AGM, placing, Basur-3 spud, Isle of Wight planning committee meeting, Loxley appeal inquiry, with news of the application for 3 additional Turkish licences and further news of HH potentially at any time.
One thing you have to remember is that SCC don't like HGV tankers either whether containing oil or water. Fine if there are lots of big vehicles for a local farm or say a wedding venue etc. but not for anything to do with Oil. That way there will be no pollution whatsoever anywhere in Surrey right?
As I have little technical knowledge of oil wells is it possible that with HH2 shut in that the water ingress from the HH2 well will pass though the slotted liner into the natural fractures to replace some of the void in the reservoir?
" Perhaps they could help Brockham out by taking their water."
The EA have tightened up a lot on injecting water from elsewhere . I guess you could argue its the same formation but not the same the same field but I think that would cause some issues - maybe another Planning Application :(((.
Knock off about 50,000 bbls for the Kimmeridge and add on about 10,000 for the water produced from the Portland and you are looking at over 500 tankers of water. I can't see that happening.
With the HH1 production over the last 3 years of 137,000 barrels of oil there would certainly be a reservoir void to fill & this will ultimately be part of the pressure issues faced which why they are looking at not returning to HH untill after the Turkey drill.
I had already read that but we are not producing 100% oil from HH-1 and we have no idea what the mix will be when the injector is in operation so I ignored the modelling based on the fact that any water cut had not been taken into account. I did note "The water will be re-injected at rates up to a maximum required to achieve full reservoir voidage replacement, which would restore the reservoir pressure to close to pre-production levels. However, this is unlikely to be achieved from the water resources on site." but not sure how much this would cost to tanker in. Perhaps they could help Brockham out by taking their water.
I had read that previously but in the Environmental permit document below you can find more information on page 15.
14 - Geological Reservoir Parameters Rev4
You need to read the RNS where it's quite clear there's little contribution to production from most of the Portland, not realised at the time of the CPR. The benefits of reperforation if it had somehow initiated production from the whole Portland interval should have been seen immediately. There was little (or no) improvement following the reperforation which suggests the bit of the reservoir (the sweet spot) that produces the 'lions share' of oil in HH-1 was pretty well 'plumbed into the well already. It's unlikely that water put into the higher porosity and permeability layer is going to permeate through the much poorer reservoir surrounding it and push out the oil and water. If anything it's going to head for HH-1, if it can.
22/10/2019:- 'The significant oil saturations and high permeabilities observed in HH-2 core and logs, indicate that the "sweet spot" has likely contributed the lion's share of the 29,568 barrels of Brent quality oil produced to date from Portland extended well testing ("EWT") operations at HH-1.'
and note the difference between the 'sweet spot' and the rest of the Portland in this RNS about the coring:-
'Live oil was observed "bleeding" profusely from core throughout the sweet-spot, the Upper Portland reservoir's most porous, permeable and oil productive interval. Lesser degrees of oil bleed, together with oil shows and oil staining were also observed from porous sandstone intervals lying above and below the sweet-spot.'
the 8-14% (of connected oil) was in the 2018 CPR - but in the EA Geological Report it's described as 'with full voidage replacemenr' and Xodus comment they don't know of a case where that's occurred in UK Onshore.
I must have missed the bit about an 8 -14% increase.
What was the baseline of the 8-14% increase based on?
Care to give details of where you got that from?
You do realise the injector is on the other side of a fracture and I for one don't even know if it is going to affect the production of HH-1. I'm sure many others will have the same opinion. We don't all believe in the gospel of SS based on previous experiences.
I believe the stated increase of oil recovery from the reservoir is predicted to be between 8 and 14% with water injection.
I don't believe that we have yet seen the benefits of the full reperforation of HH1 which should include the Upper & lower Portland layers providing a greatly increased flow which a water injector will help to reduce costs of water disposal off site.
Water injection is something usually done later in the life of a field, sweeping oil towards producers or into the water leg to aid pressure, in a carefully chosen location.
They were fortunate their previous mapping was so wrong and HH-2z is down dip of HH-1, and dips down to the toe, but this is a complex reservoir, fractured, faulted, compartmentalised and the lions share of production from a limited thickness higher porosity, permeability zone that has a poorer layer within it, and despite being deeper than HH-1 HH-2z is probably not ideally located.
Having identified the possibility of fracturing in 2016 it seems strange that 5 years later, after months of testing and production they still haven't fully characterised the reservoir suggesting it's difficult to production match the model (from 15/1/21 RNS):-
'Technical work is ongoing to further characterise the Portland reservoir's delivery mechanisms and, in particular, the prevalence and role of the natural fracturing within the Portland section.'
Presuming they are given permission they will certainly need to be careful and test to see what happens. At best increase production as water disposal costs are minimal, though pressure support is unlikely to be absolute so they may still need intermittent production, at worst not possible because it increases water cut because of the fracturing providing a route from injector to the well.
Imagine you have 1000 barrels of oil and 1000 barrels of water. You take out 100 barrels of oil and 100 barrels of water. You put the 100 barrels of water back in. You are then left with 900 barrels of oil and 1000 barrels of water. You have lost 5% of your original volume.
Wytch Farm re-injects all the water produced and production is still declining slowly.
These are Horndean figures between December 2015 and November 2016 and if anything when there have been long periods of injection the production has dropped to a pretty consistent level .
Tonnes of water injected
216 278 248 217 390 222 250 226 215 271 224 211
Tonnes of oil produced
504 577 531 605 548 606 596 605 566 575 615 54
The jury is out on this one as far as I'm concerned. Only time will tell.
Wouldn't the water injection possibly make a significant impact if and when permission is granted.......if I'm allowed to say so
True Ocelot - problem is the only way to cut outgoings at HH is to not do anything new - no dual completion, no new wells.
As far as it goes it's probably wise - the 100 bopd are covering quite a bit of their day to day costs. The only game changer is the Turkish deal - it means another raise of course but at least it has a fighting chance of success - whereas it looks like HH is a dodo. Spending cash on planning appeals, PR and legal eagles does nothing for the Company cp with using the money to drill wells.
The last placing was for the relatively modest sum of £2.2m and was on 02/10/20, about 6 months and 3 weeks ago. At the time, nobody was expecting the next placing to take so long.
It makes one realise just how much of a cash drain HH investments have constituted (as the 19/20 annual figures also showed).
The impact of SS's shift of strategy is, therefore, two-fold:
1/ investment in Turkey at lower costs than in the UK;
2/ substantial reduction of HH's call on UKOG's cash resources.
it's in the post....was that 2nd class ....just like you Mirabelle
Who is Adrian ?Mirabelle
pipeline from horse hill?
The Isle of Wight “biosphere” needs water!
Southern water are pumping too much out of the River Test. So they have proposed building a desalination plant very close to Fawley and it will use as much electric as the Isle of Wight! ..... and it will pump all the waste brine into the shallows of the Solent.
The brine containing IRO 2,600 tons of salt /day discharged into the sea based on 3% salt
The location of intake & discharge pipes will be in the Solent that has Sites of Scientific interest [SSI], Wetlands of International Importance [Ramsar], Special Areas of Conservation (SACs) contain marine habitats or species of European importance. Special Protection Areas (SPAs) contain populations of particular species of birds of European importance that depend on the marine environment.
I don’t see any XR protests. ........