Shale Gas

George Kerevan Excerpts

Tuesday 30th June 2015 Westminster Hall

[Dr Whitehead]

The hon. Gentleman is right to say that we buy some LNG from Qatar, but only about 0.5% of the UK supply comes directly from Russia. Buying gas from Russia is really not an issue for this country, although it is for some other parts of Europe. My point was that the international trading arrangements for gas have three nodes across the world—the far east node, the north American node and the European node—and gas is traded and pipelined within those nodes. The product of shale gas in this country would simply go into one of those nodes and be traded across them, and the price would even out. That is my point about whether a shale gas industry would mean a substantial reduction in price.

I want to concentrate on what a shale gas industry in this country would look like. We have only one serious document sponsored by the Department of Energy and Climate Change that looks at the consequences of a serious industry. My concern is that that document, a strategic assessment produced by AMEC a little while ago, estimates the output from shale gas wells to be 3.2 billion cubic feet per well over 20 years. As an average output for wells in the UK, that would equate to the best level ever obtained in any well in north America. Conditions for shale gas in the UK are very different from those in the United States, and the likelihood is that the output per well would be far lower than the very best output in the US. On top of that, the current average US well output is about 0.8 billion cubic feet—far lower than the best ever output—and, more to the point, there is a rapid rate of depletion per well.

In fact, a shale gas industry in the UK would see relatively low gas output per well, with a fairly rapid depletion rate and the necessity for re-fracking, probably once every seven or eight years, were the well to be retained in production over 20 years. It is not a question of a well pad being drilled and then the equivalent of “nodding donkeys”, such as we have at Wytch Farm, nodding away quietly in the countryside. The process of trucks, waste water and re-fracking would have to be repeated every few years on that well pad in order to keep it going. Even then, the depletion rate is more rapid after the second re-fracking, after which the well goes out of business.

[George Kerevan (East Lothian) (SNP)]

Given the multiplicity of wells that would have to be drilled, does the hon. Gentleman agree that the UK would require a massive pipeline system and investment in a massive gas storage system? That would affect a large number of constituencies, not just where the drilling originally was.

[Dr Whitehead]

The hon. Gentleman is absolutely right: the location of various wells would require either that the gas was stored in tanks near the well and then transported or that new pipelines be constructed to take it away. A pipeline could not be organised in the same way as for the North sea.

On the basis of the scenario I have outlined for what a shale gas industry would look like in this country, the estimates are that, in order to divert, let us say, 10% of our gas supply from conventional gas into shale gas and remove part of the need to have gas from Qatar or Russia—10% is a modest diversion—we would need to drill somewhere between 10,000 and 18,000 wells, and they would have to be re-drilled over a period. Of course, those wells would not be evenly distributed throughout the country—Members would not have around two wells per constituency; wells would be concentrated in the two areas of the UK where there are reasonable shale plays. Those shale plays are geologically faulted and difficult to get at; nevertheless, they are the main areas: Bowland shale in the north-east of England and across the weald in the south.

We are looking at 10,000 to 18,000 wells concentrated in two parts of the country. As the hon. Member for Thirsk and Malton said, that would probably result in the very intensive geographical concentration of fracking in those areas, with a substantial geographical concentration of take-off facilities and of the need to remove waste water, 7 million gallons of which per well will have to be removed and disposed of fairly safely as hazardous waste. We do not currently have the ability to do that in this country. We can do it for the occasional well, but we would not be able to do it very easily without substantial new facilities for such a concentration of hazardous waste, which would be repeated as the wells were re-fracked.

We need to ask whether all that is a realistic prospect compared with the gain that might come from extracting the additional gas. It seems to me that, if that is what we want for our energy strategy, there will be a very high price to pay throughout the country for a marginal gain. Are we really, seriously committing ourselves to that? Recent events in Lancashire demonstrate that it is rather difficult to get two wells into the ground, let alone 18,000 over a longer period. I am worried that we are setting ourselves up by assuming that some of our future energy supplies are going to be pencilled in for this particular route, when either there are unacceptable costs to reaching that goal or, to make the industry work, we will have to build a whole lot of infrastructure on the back of what we already have.

Having considered at how a UK shale gas industry might look, it might be interesting to look briefly at an alternative industry: green gas, which is the production of gas by anaerobic digestion plants and associated methods. It has been projected that, by using most of the available feedstock that could go into anaerobic digestion plants, we could probably divert between 5% and 10% of our domestic gas supply requirements. When I say “divert”, I mean literally divert, because green gas AD plants can now inject gas directly into the mains.

There are eight green gas plants currently operating in the UK. I recently visited one in Poundbury, which, at certain times of the year, injects gas into the mains grid. People living between, roughly speaking, Lyndhurst and Weymouth will receive green gas from the Poundbury anaerobic digestion plant at various times of the year. There is direct substitution of the existing gas going into the mains. An AD plant would probably produce some 6 million cubic metres over 20 years. A well could produce rather more at some 20 million cubic metres, but it would have to be re-fracked several times. After that, the well would be capped and the operators would walk away. Because plants and animals continue to produce feedstock, AD green gas plants would simply continue. If we are considering changing from gas imports to domestic production for national security purposes, it might be a better idea to build a large number of AD plants and have one at the end of every lane.